Duolingo - Revision history

SinexTitan: red link naw bloo

2026-03-19T17:49:26Z

red link naw bloo

← Older revision		Revision as of 17:49, 19 March 2026
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	It is also mentioned that when completing a lesson, a video of a user's lesson "will be logged by a service called FullStory". This service records usage patterns, device specs, and learning activity, and is only disabled by default for child users. Opting out requires going to FullStory's website.		It is also mentioned that when completing a lesson, a video of a user's lesson "will be logged by a service called FullStory". This service records usage patterns, device specs, and learning activity, and is only disabled by default for child users. Opting out requires going to FullStory's website.

	The policy states the app works with third-party advertising networks to [[Personalized Ads\|personalize advertising]], such as with [[Google]], [[Meta]], [[OAuth]], and [[Unity]]. Personalized advertising can be disabled in the app's settings.		The policy states the app works with third-party advertising networks to [[Personalized Ads\|personalize advertising]], such as with [[Google]], [[Meta]], [[OAuth]], and [[Unity Engine runtime fee\|Unity]]. Personalized advertising can be disabled in the app's settings.

	The Exodus Privacy project lists as many as 13 tracking, advertising and analytics service libraries being present in the Android version of the app.<ref>{{Cite web\|url=https://reports.exodus-privacy.eu.org/de/reports/com.duolingo/latest/\|title=Report for com.duolingo 6.22.3\|work=exodus\|date=2025-03-25\|access-date=2025-03-26\|archive-url=https://web.archive.org/web/20250326193207/https://reports.exodus-privacy.eu.org/de/reports/com.duolingo/latest/\|archive-date=2025-03-26\|url-status=live}}</ref> The app does not work for more than about one lesson without internet access, hence turning off internet access is not an option to prevent data exfiltration. The [https://trackercontrol.org/ F-Droid version of Tracker Control] can help with blocking some of the traffic to these services without impacting the functionality of the app.		The Exodus Privacy project lists as many as 13 tracking, advertising and analytics service libraries being present in the Android version of the app.<ref>{{Cite web\|url=https://reports.exodus-privacy.eu.org/de/reports/com.duolingo/latest/\|title=Report for com.duolingo 6.22.3\|work=exodus\|date=2025-03-25\|access-date=2025-03-26\|archive-url=https://web.archive.org/web/20250326193207/https://reports.exodus-privacy.eu.org/de/reports/com.duolingo/latest/\|archive-date=2025-03-26\|url-status=live}}</ref> The app does not work for more than about one lesson without internet access, hence turning off internet access is not an option to prevent data exfiltration. The [https://trackercontrol.org/ F-Droid version of Tracker Control] can help with blocking some of the traffic to these services without impacting the functionality of the app.

AnotherConsumerRightsPerson: fix typo

2026-03-19T16:51:55Z

fix typo

← Older revision		Revision as of 16:51, 19 March 2026
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	====Privacy====		====Privacy====
	According to the privacy policy, if a Duolingo Max user utilizes artificial-intelligence (AI) features, a copy of their text or audio data will be shared with vendors such as [[OpenAI]].<ref>{{Cite web\|url=https://www.duolingo.com/privacy\|title=Privacy Policy\|work=Duolingo\|date=2024-09-11\|access-date=2025-03-26\|archive-url=https://web.archive.org/web/20250124094802/https://www.duolingo.com/privacy\|archive-date=2025-01-24\|url-status=live}}</ref> This is also similar for non-AI features, as Duolingo "may also collect and analyze your speech to help [it] understand the effectiveness of [its] lessons and to improve the product", though the data ~~are~~ anonymized.		According to the privacy policy, if a Duolingo Max user utilizes artificial-intelligence (AI) features, a copy of their text or audio data will be shared with vendors such as [[OpenAI]].<ref>{{Cite web\|url=https://www.duolingo.com/privacy\|title=Privacy Policy\|work=Duolingo\|date=2024-09-11\|access-date=2025-03-26\|archive-url=https://web.archive.org/web/20250124094802/https://www.duolingo.com/privacy\|archive-date=2025-01-24\|url-status=live}}</ref> This is also similar for non-AI features, as Duolingo "may also collect and analyze your speech to help [it] understand the effectiveness of [its] lessons and to improve the product", though the data is anonymized.

	It is also mentioned that when completing a lesson, a video of a user's lesson "will be logged by a service called FullStory". This service records usage patterns, device specs, and learning activity, and is only disabled by default for child users. Opting out requires going to FullStory's website.		It is also mentioned that when completing a lesson, a video of a user's lesson "will be logged by a service called FullStory". This service records usage patterns, device specs, and learning activity, and is only disabled by default for child users. Opting out requires going to FullStory's website.
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	Recently, some of the timed learning games inside the app are impossible to complete in the time allowed, even for a native speaker of the language.{{Cite}} In order to win, the user needs to pay for a subscription to buy more time. This also means that the learning high scores can essentially be bought.		Recently, some of the timed learning games inside the app are impossible to complete in the time allowed, even for a native speaker of the language.{{Cite}} In order to win, the user needs to pay for a subscription to buy more time. This also means that the learning high scores can essentially be bought.

	=== Abusing iPhone Dynamic Island Feature for advertising (2026) ===		===Abusing iPhone Dynamic Island Feature for advertising (2026)===
	Ignoring Apple's app store guidelines, the company used the Dynamic Island feature, an area of the iOS screen reserved for notifying users of progress of background processes, to push a sales promotion with a countdown via its iPhone app.<ref>{{Cite web \|last=Schwan \|first=Ben \|date=2026-01-05 \|title=Duolingo is putting ads in Apple's Dynamic Island – even though it's not allowed \|url=https://www.heise.de/en/news/Duolingo-is-putting-ads-in-Apple-s-Dynamic-Island-even-though-it-s-not-allowed-11128917.html \|access-date=2026-01-05 \|website=Heise Online \|archive-url=http://web.archive.org/web/20260106005825/https://www.heise.de/en/news/Duolingo-is-putting-ads-in-Apple-s-Dynamic-Island-even-though-it-s-not-allowed-11128917.html \|archive-date=6 Jan 2026}}</ref>		Ignoring Apple's app store guidelines, the company used the Dynamic Island feature, an area of the iOS screen reserved for notifying users of progress of background processes, to push a sales promotion with a countdown via its iPhone app.<ref>{{Cite web \|last=Schwan \|first=Ben \|date=2026-01-05 \|title=Duolingo is putting ads in Apple's Dynamic Island – even though it's not allowed \|url=https://www.heise.de/en/news/Duolingo-is-putting-ads-in-Apple-s-Dynamic-Island-even-though-it-s-not-allowed-11128917.html \|access-date=2026-01-05 \|website=Heise Online \|archive-url=http://web.archive.org/web/20260106005825/https://www.heise.de/en/news/Duolingo-is-putting-ads-in-Apple-s-Dynamic-Island-even-though-it-s-not-allowed-11128917.html \|archive-date=6 Jan 2026}}</ref>

ClippyWantsToHelp: /* Consumer-impact summary */ link to personalized ads

2026-03-19T15:13:33Z

Consumer-impact summary: link to personalized ads

← Older revision		Revision as of 15:13, 19 March 2026
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	It is also mentioned that when completing a lesson, a video of a user's lesson "will be logged by a service called FullStory". This service records usage patterns, device specs, and learning activity, and is only disabled by default for child users. Opting out requires going to FullStory's website.		It is also mentioned that when completing a lesson, a video of a user's lesson "will be logged by a service called FullStory". This service records usage patterns, device specs, and learning activity, and is only disabled by default for child users. Opting out requires going to FullStory's website.

	The policy states the app works with third-party advertising networks to personalize advertising, such as with [[Google]], [[Meta]], [[OAuth]], and [[Unity]]. Personalized advertising can be disabled in the app's settings.		The policy states the app works with third-party advertising networks to [[Personalized Ads\|personalize advertising]], such as with [[Google]], [[Meta]], [[OAuth]], and [[Unity]]. Personalized advertising can be disabled in the app's settings.

	The Exodus Privacy project lists as many as 13 tracking, advertising and analytics service libraries being present in the Android version of the app.<ref>{{Cite web\|url=https://reports.exodus-privacy.eu.org/de/reports/com.duolingo/latest/\|title=Report for com.duolingo 6.22.3\|work=exodus\|date=2025-03-25\|access-date=2025-03-26\|archive-url=https://web.archive.org/web/20250326193207/https://reports.exodus-privacy.eu.org/de/reports/com.duolingo/latest/\|archive-date=2025-03-26\|url-status=live}}</ref> The app does not work for more than about one lesson without internet access, hence turning off internet access is not an option to prevent data exfiltration. The [https://trackercontrol.org/ F-Droid version of Tracker Control] can help with blocking some of the traffic to these services without impacting the functionality of the app.		The Exodus Privacy project lists as many as 13 tracking, advertising and analytics service libraries being present in the Android version of the app.<ref>{{Cite web\|url=https://reports.exodus-privacy.eu.org/de/reports/com.duolingo/latest/\|title=Report for com.duolingo 6.22.3\|work=exodus\|date=2025-03-25\|access-date=2025-03-26\|archive-url=https://web.archive.org/web/20250326193207/https://reports.exodus-privacy.eu.org/de/reports/com.duolingo/latest/\|archive-date=2025-03-26\|url-status=live}}</ref> The app does not work for more than about one lesson without internet access, hence turning off internet access is not an option to prevent data exfiltration. The [https://trackercontrol.org/ F-Droid version of Tracker Control] can help with blocking some of the traffic to these services without impacting the functionality of the app.

Bananabot: Added archive URLs for 1 citation(s) using CRWCitationBot

2026-02-23T03:57:58Z

Added archive URLs for 1 citation(s) using CRWCitationBot

← Older revision		Revision as of 03:57, 23 February 2026
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	=== Abusing iPhone Dynamic Island Feature for advertising (2026) ===		=== Abusing iPhone Dynamic Island Feature for advertising (2026) ===
	Ignoring Apple's app store guidelines, the company used the Dynamic Island feature, an area of the iOS screen reserved for notifying users of progress of background processes, to push a sales promotion with a countdown via its iPhone app.<ref>{{Cite web \|last=Schwan \|first=Ben \|date=2026-01-05 \|title=Duolingo is putting ads in Apple's Dynamic Island – even though it's not allowed \|url=https://www.heise.de/en/news/Duolingo-is-putting-ads-in-Apple-s-Dynamic-Island-even-though-it-s-not-allowed-11128917.html \|access-date=2026-01-05 \|website=Heise Online}}</ref>		Ignoring Apple's app store guidelines, the company used the Dynamic Island feature, an area of the iOS screen reserved for notifying users of progress of background processes, to push a sales promotion with a countdown via its iPhone app.<ref>{{Cite web \|last=Schwan \|first=Ben \|date=2026-01-05 \|title=Duolingo is putting ads in Apple's Dynamic Island – even though it's not allowed \|url=https://www.heise.de/en/news/Duolingo-is-putting-ads-in-Apple-s-Dynamic-Island-even-though-it-s-not-allowed-11128917.html \|access-date=2026-01-05 \|website=Heise Online \|archive-url=http://web.archive.org/web/20260106005825/https://www.heise.de/en/news/Duolingo-is-putting-ads-in-Apple-s-Dynamic-Island-even-though-it-s-not-allowed-11128917.html \|archive-date=6 Jan 2026}}</ref>

	==Products==		==Products==

Bananabot: Re-archived 1 citation(s) from archive.today to web.archive.org using CRWCitationBot

2026-02-22T21:56:55Z

Re-archived 1 citation(s) from archive.today to web.archive.org using CRWCitationBot

← Older revision		Revision as of 21:56, 22 February 2026
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	On March 14, 2023, a new subscription service was released called "Duolingo Max", that promised highly personalized language learning with [[ChatGPT]]-4 integration.<ref>{{Cite web\|url=https://blog.duolingo.com/duolingo-max/\|title=Duolingo Max Uses OpenAI's GPT-4 For New Learning Features\|author=Duolingo Team\|date=2023-03-14\|work=Duolingo Blog\|access-date=2025-03-26\|archive-url=https://web.archive.org/web/20250304001440/https://blog.duolingo.com/duolingo-max/\|archive-date=2025-03-04\|url-status=live}}</ref> In September 2024, a new feature was added to the subscription that allowed users to interact with a character named Lily.<ref>{{Cite web\|url=https://blog.duolingo.com/video-call/\|title=Duolingo's Video Call Offers Realistic Conversation Practice\|author=Duolingo Team\|date=2024-09-24\|access-date=2025-03-26\|work=Duolingo Blog\|archive-url=https://web.archive.org/web/20250306000114/https://blog.duolingo.com/video-call/\|archive-date=2025-03-06\|url-status=live}}</ref> This subscription feature would show on the "learning path"<ref>{{Cite web\|url=https://blog.duolingo.com/new-duolingo-home-screen-design/\|title=The Science Behind Duolingo's Home Screen Redesign\|first1=Holly\|last1=Munson\|first2=Anton\|last2=Yu\|first3=Ananya\|last3=Rajgarhia\|first4=Aj\|last4=Noh\|work=Duolingo Blog\|date=2022-05-06\|access-date=2025-03-26\|archive-url=https://web.archive.org/web/20250302080539/https://blog.duolingo.com/new-duolingo-home-screen-design/\|archive-date=2025-03-02\|url-status=live}}</ref> for all users, regardless of their subscription status.		On March 14, 2023, a new subscription service was released called "Duolingo Max", that promised highly personalized language learning with [[ChatGPT]]-4 integration.<ref>{{Cite web\|url=https://blog.duolingo.com/duolingo-max/\|title=Duolingo Max Uses OpenAI's GPT-4 For New Learning Features\|author=Duolingo Team\|date=2023-03-14\|work=Duolingo Blog\|access-date=2025-03-26\|archive-url=https://web.archive.org/web/20250304001440/https://blog.duolingo.com/duolingo-max/\|archive-date=2025-03-04\|url-status=live}}</ref> In September 2024, a new feature was added to the subscription that allowed users to interact with a character named Lily.<ref>{{Cite web\|url=https://blog.duolingo.com/video-call/\|title=Duolingo's Video Call Offers Realistic Conversation Practice\|author=Duolingo Team\|date=2024-09-24\|access-date=2025-03-26\|work=Duolingo Blog\|archive-url=https://web.archive.org/web/20250306000114/https://blog.duolingo.com/video-call/\|archive-date=2025-03-06\|url-status=live}}</ref> This subscription feature would show on the "learning path"<ref>{{Cite web\|url=https://blog.duolingo.com/new-duolingo-home-screen-design/\|title=The Science Behind Duolingo's Home Screen Redesign\|first1=Holly\|last1=Munson\|first2=Anton\|last2=Yu\|first3=Ananya\|last3=Rajgarhia\|first4=Aj\|last4=Noh\|work=Duolingo Blog\|date=2022-05-06\|access-date=2025-03-26\|archive-url=https://web.archive.org/web/20250302080539/https://blog.duolingo.com/new-duolingo-home-screen-design/\|archive-date=2025-03-02\|url-status=live}}</ref> for all users, regardless of their subscription status.

	On September 3, 2024, users alleged they could not make a lesson have "legendary" status unless they paid for the "Duolingo Max" subscription to access the video-call lessons.<ref>{{Cite web\|url=https://www.reddit.com/r/duolingo/comments/1f7wlul/how_am_i_supposed_to_legendary/\|title=How am I supposed to legendary?\|author=u/ChasingKilts\|date=2024-09-03\|work=Reddit\|access-date=2025-03-27\|archive-url=https://archive.ph/~~mwuQE~~\|archive-date=~~2025-03-26~~\|url-status=live}}</ref> At the time, the subscription was $30 per month and to get a legendary status for a lesson, each attempt would be 100 gems for free users<ref>{{Cite web\|url=https://www.reddit.com/r/duolingo/comments/1f7wlul/comment/llbedvt/\|title=Bluerious518 comments on How am I supposed to legendary?\|author=u/Bluerious518\|work=Reddit\|date=2024-09-03\|access-date=2025-03-27\|archive-url=https://archive.ph/O5qvQ\|archive-date=2025-01-23\|url-status=live}}</ref> (not including Super Duolingo users).<ref>{{Cite web\|url=https://blog.duolingo.com/super-duolingo-launch/\|title=Super Duolingo Is Duolingo's New Premium Product\|first=Jay\|last=Fanelli\|work=Duolingo Blog\|date=2022-06-08\|access-date=2025-03-26\|archive-url=https://web.archive.org/web/20250124090707/https://blog.duolingo.com/super-duolingo-launch/\|archive-date=2025-01-24\|url-status=live}}</ref> Some users were able to fix the behavior, though the "go to legendary" button would still not bring users to a skipped or new level.<ref>{{Cite web\|url=https://www.reddit.com/r/duolingo/comments/1f7wlul/how_am_i_supposed_to_legendary/m6uspad/\|title=haa888 comments on How am I supposed to legendary?\|author=u/haa888\|work=Reddit\|date=2025-01-13\|access-date=2025-03-27\|archive-url=https://archive.ph/Jzon1\|archive-date=2025-01-23\|url-status=live}}</ref>		On September 3, 2024, users alleged they could not make a lesson have "legendary" status unless they paid for the "Duolingo Max" subscription to access the video-call lessons.<ref>{{Cite web\|url=https://www.reddit.com/r/duolingo/comments/1f7wlul/how_am_i_supposed_to_legendary/\|title=How am I supposed to legendary?\|author=u/ChasingKilts\|date=2024-09-03\|work=Reddit\|access-date=2025-03-27\|archive-url=https://web.archive.org/web/20260222215616/https://old.reddit.com/r/duolingo/comments/1f7wlul/how_am_i_supposed_to_legendary/\|archive-date=22 Feb 2026\|url-status=live}}</ref> At the time, the subscription was $30 per month and to get a legendary status for a lesson, each attempt would be 100 gems for free users<ref>{{Cite web\|url=https://www.reddit.com/r/duolingo/comments/1f7wlul/comment/llbedvt/\|title=Bluerious518 comments on How am I supposed to legendary?\|author=u/Bluerious518\|work=Reddit\|date=2024-09-03\|access-date=2025-03-27\|archive-url=https://archive.ph/O5qvQ\|archive-date=2025-01-23\|url-status=live}}</ref> (not including Super Duolingo users).<ref>{{Cite web\|url=https://blog.duolingo.com/super-duolingo-launch/\|title=Super Duolingo Is Duolingo's New Premium Product\|first=Jay\|last=Fanelli\|work=Duolingo Blog\|date=2022-06-08\|access-date=2025-03-26\|archive-url=https://web.archive.org/web/20250124090707/https://blog.duolingo.com/super-duolingo-launch/\|archive-date=2025-01-24\|url-status=live}}</ref> Some users were able to fix the behavior, though the "go to legendary" button would still not bring users to a skipped or new level.<ref>{{Cite web\|url=https://www.reddit.com/r/duolingo/comments/1f7wlul/how_am_i_supposed_to_legendary/m6uspad/\|title=haa888 comments on How am I supposed to legendary?\|author=u/haa888\|work=Reddit\|date=2025-01-13\|access-date=2025-03-27\|archive-url=https://archive.ph/Jzon1\|archive-date=2025-01-23\|url-status=live}}</ref>

	====Implications====		====Implications====

Mr Pollo: Moving new entry to bottom of section per year order

2026-01-06T00:58:11Z

Moving new entry to bottom of section per year order

← Older revision		Revision as of 00:58, 6 January 2026
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	==Incidents==		==Incidents==

	~~=== Abusing iPhone Dynamic Island Feature for advertising (2026) ===~~
	Ignoring Apple's app store guidelines, the company used the Dynamic Island feature, an area of the iOS screen reserved for notifying users of progress of background processes, to push a sales promotion with a countdown via its iPhone app.<ref>{{Cite web \|last=Schwan \|first=Ben \|date=2026-01-05 \|title=Duolingo is putting ads in Apple's Dynamic Island – even though it's not allowed \|url=https://www.heise.de/en/news/Duolingo-is-putting-ads-in-Apple-s-Dynamic-Island-even-though-it-s-not-allowed-11128917.html \|access-date=2026-01-05 \|website=Heise Online}}</ref>

	===Data breach (2023)===		===Data breach (2023)===
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	===Pay-to-win pattern===		===Pay-to-win pattern===
	Recently, some of the timed learning games inside the app are impossible to complete in the time allowed, even for a native speaker of the language. In order to win, the user needs to pay for a subscription to buy more time. This also means that the learning high scores can essentially be bought.		Recently, some of the timed learning games inside the app are impossible to complete in the time allowed, even for a native speaker of the language.{{Cite}} In order to win, the user needs to pay for a subscription to buy more time. This also means that the learning high scores can essentially be bought.

			=== Abusing iPhone Dynamic Island Feature for advertising (2026) ===
			Ignoring Apple's app store guidelines, the company used the Dynamic Island feature, an area of the iOS screen reserved for notifying users of progress of background processes, to push a sales promotion with a countdown via its iPhone app.<ref>{{Cite web \|last=Schwan \|first=Ben \|date=2026-01-05 \|title=Duolingo is putting ads in Apple's Dynamic Island – even though it's not allowed \|url=https://www.heise.de/en/news/Duolingo-is-putting-ads-in-Apple-s-Dynamic-Island-even-though-it-s-not-allowed-11128917.html \|access-date=2026-01-05 \|website=Heise Online}}</ref>

	==Products==		==Products==

MrTuttle: /* Incidents */ Add iPhone dynamic island advertising incident

2026-01-05T22:52:30Z

Incidents: Add iPhone dynamic island advertising incident

← Older revision		Revision as of 22:52, 5 January 2026
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	==Incidents==		==Incidents==

			=== Abusing iPhone Dynamic Island Feature for advertising (2026) ===
			Ignoring Apple's app store guidelines, the company used the Dynamic Island feature, an area of the iOS screen reserved for notifying users of progress of background processes, to push a sales promotion with a countdown via its iPhone app.<ref>{{Cite web \|last=Schwan \|first=Ben \|date=2026-01-05 \|title=Duolingo is putting ads in Apple's Dynamic Island – even though it's not allowed \|url=https://www.heise.de/en/news/Duolingo-is-putting-ads-in-Apple-s-Dynamic-Island-even-though-it-s-not-allowed-11128917.html \|access-date=2026-01-05 \|website=Heise Online}}</ref>

	===Data breach (2023)===		===Data breach (2023)===
	In January 2023, the data of 2.6 million users were posted to an online hacking forum for $1,500.<ref>{{Cite web\|url=https://www.bleepingcomputer.com/news/security/scraped-data-of-26-million-duolingo-users-released-on-hacking-forum/\|title=Scraped data of 2.6 million Duolingo users released on hacking forum\|first=Lawrence\|last=Abrams\|work=Bleeping Computer\|date=2023-08-22\|access-date=2025-03-26\|archive-url=https://web.archive.org/web/20250309233352/https://www.bleepingcomputer.com/news/security/scraped-data-of-26-million-duolingo-users-released-on-hacking-forum/\|archive-date=2025-03-09\|url-status=live}}</ref> The data were scraped from a vulnerable API, with email addresses, usernames, languages spoken, and real names being included.<ref>{{Cite web\|url=https://haveibeenpwned.com/PwnedWebsites#Duolingo\|title=Pwned websites\|work=haveibeenpwned.com\|access-date=2025-03-26\|archive-url=https://web.archive.org/web/20250309182649/https://haveibeenpwned.com/PwnedWebsites#Duolingo\|archive-date=2025-03-09\|url-status=live}}</ref> A spokesperson for Duolingo stressed that "these records were obtained by data-scraping public profile information" and "no data breach or hack has occurred".<ref>{{Cite web\|url=https://therecord.media/duolingo-investigating-dark-web-post-offering-data-from-2-6-million-accounts\|title=DuoLingo investigating dark web post offering data from 2.6 million accounts\|first=Jonathan\|last=Greig\|date=2023-01-23\|work=The Record.\|access-date=2025-03-26\|archive-url=https://web.archive.org/web/20250307194542/https://therecord.media/duolingo-investigating-dark-web-post-offering-data-from-2-6-million-accounts\|archive-date=2025-03-07\|url-status=live}}</ref>		In January 2023, the data of 2.6 million users were posted to an online hacking forum for $1,500.<ref>{{Cite web\|url=https://www.bleepingcomputer.com/news/security/scraped-data-of-26-million-duolingo-users-released-on-hacking-forum/\|title=Scraped data of 2.6 million Duolingo users released on hacking forum\|first=Lawrence\|last=Abrams\|work=Bleeping Computer\|date=2023-08-22\|access-date=2025-03-26\|archive-url=https://web.archive.org/web/20250309233352/https://www.bleepingcomputer.com/news/security/scraped-data-of-26-million-duolingo-users-released-on-hacking-forum/\|archive-date=2025-03-09\|url-status=live}}</ref> The data were scraped from a vulnerable API, with email addresses, usernames, languages spoken, and real names being included.<ref>{{Cite web\|url=https://haveibeenpwned.com/PwnedWebsites#Duolingo\|title=Pwned websites\|work=haveibeenpwned.com\|access-date=2025-03-26\|archive-url=https://web.archive.org/web/20250309182649/https://haveibeenpwned.com/PwnedWebsites#Duolingo\|archive-date=2025-03-09\|url-status=live}}</ref> A spokesperson for Duolingo stressed that "these records were obtained by data-scraping public profile information" and "no data breach or hack has occurred".<ref>{{Cite web\|url=https://therecord.media/duolingo-investigating-dark-web-post-offering-data-from-2-6-million-accounts\|title=DuoLingo investigating dark web post offering data from 2.6 million accounts\|first=Jonathan\|last=Greig\|date=2023-01-23\|work=The Record.\|access-date=2025-03-26\|archive-url=https://web.archive.org/web/20250307194542/https://therecord.media/duolingo-investigating-dark-web-post-offering-data-from-2-6-million-accounts\|archive-date=2025-03-07\|url-status=live}}</ref>

NinjaWeeb at 18:00, 21 November 2025

2025-11-21T18:00:46Z

← Older revision		Revision as of 18:00, 21 November 2025
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	'''[[wikipedia:Duolingo\|Duolingo]]''' is a publicly owned, American language-learning website founded in 2011 by Luis von Ahn and Severin Hacker.<ref>{{Cite web\|url=https://press.duolingo.com/#about\|title=Our Mission\|work=Duolingo Press Room\|access-date=2025-03-26\|archive-url=https://web.archive.org/web/20250319203900/https://press.duolingo.com/#about\|archive-date=2025-03-19\|url-status=live}}</ref> On July 28, 2021, the company began trading on the Nasdaq Global Select Market.<ref>{{Cite web\|url=https://investors.duolingo.com/news-releases/news-release-details/duolingo-announces-pricing-initial-public-offering\|title=Duolingo Announces Pricing of Initial Public Offering\|date=2021-07-27\|work=Duolingo Press Room\|access-date=2025-03-26\|archive-url=https://web.archive.org/web/20250124122817/https://investors.duolingo.com/news-releases/news-release-details/duolingo-announces-pricing-initial-public-offering\|archive-date=2025-01-24\|url-status=live}}</ref> As of Q3 2024, the app has over 37 million daily active users and 8.6 million paid subscribers, with a net income of $23.4 million.<ref>{{Cite web\|url=https://investors.duolingo.com/financials\|title=Financials\|work=Duolingo Press Room\|access-date=2025-03-26\|archive-url=https://web.archive.org/web/20250124101114/https://investors.duolingo.com/financials\|archive-date=2025-01-24\|url-status=live}}</ref>		'''[[wikipedia:Duolingo\|Duolingo]]''' is a publicly owned, American language-learning website founded in 2011 by Luis von Ahn and Severin Hacker.<ref>{{Cite web\|url=https://press.duolingo.com/#about\|title=Our Mission\|work=Duolingo Press Room\|access-date=2025-03-26\|archive-url=https://web.archive.org/web/20250319203900/https://press.duolingo.com/#about\|archive-date=2025-03-19\|url-status=live}}</ref> On July 28, 2021, the company began trading on the Nasdaq Global Select Market.<ref>{{Cite web\|url=https://investors.duolingo.com/news-releases/news-release-details/duolingo-announces-pricing-initial-public-offering\|title=Duolingo Announces Pricing of Initial Public Offering\|date=2021-07-27\|work=Duolingo Press Room\|access-date=2025-03-26\|archive-url=https://web.archive.org/web/20250124122817/https://investors.duolingo.com/news-releases/news-release-details/duolingo-announces-pricing-initial-public-offering\|archive-date=2025-01-24\|url-status=live}}</ref> As of Q3 2024, the app has over 37 million daily active users and 8.6 million paid subscribers, with a net income of $23.4 million.<ref>{{Cite web\|url=https://investors.duolingo.com/financials\|title=Financials\|work=Duolingo Press Room\|access-date=2025-03-26\|archive-url=https://web.archive.org/web/20250124101114/https://investors.duolingo.com/financials\|archive-date=2025-01-24\|url-status=live}}</ref>


	==Consumer-impact summary==		==Consumer-impact summary==
	====Freedom====		====Freedom====

Mingyee: Minor proofreading

2025-08-27T12:12:52Z

Minor proofreading

← Older revision		Revision as of 12:12, 27 August 2025
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	==Consumer impact summary==		==Consumer-impact summary==
	====Freedom====		====Freedom====
	Users can delete their Duolingo account through the app settings and request their account data through the "[https://drive-thru.duolingo.com/ Duolingo Data Vault]". Users can also allow or deny the collection of optional information through the settings, such as location and anonymous speech data.		Users can delete their Duolingo account through the app settings and request their account data through the "[https://drive-thru.duolingo.com/ Duolingo Data Vault]". Users can also allow or deny the collection of optional information through the settings, such as location and anonymous speech data.

	====Privacy====		====Privacy====
	According to the privacy policy, if a Duolingo Max user utilizes artificial-intelligence (AI) features, a copy of their text or audio data will be shared with vendors such as [[OpenAI]].<ref>{{Cite web\|url=https://www.duolingo.com/privacy\|title=Privacy Policy\|work=Duolingo\|date=2024-09-11\|access-date=2025-03-26\|archive-url=https://web.archive.org/web/20250124094802/https://www.duolingo.com/privacy\|archive-date=2025-01-24\|url-status=live}}</ref> This is also similar for non-AI features, as Duolingo "may also collect and analyze your speech to help [it] understand the effectiveness of [its] lessons and to improve the product," though the data is anonymized.		According to the privacy policy, if a Duolingo Max user utilizes artificial-intelligence (AI) features, a copy of their text or audio data will be shared with vendors such as [[OpenAI]].<ref>{{Cite web\|url=https://www.duolingo.com/privacy\|title=Privacy Policy\|work=Duolingo\|date=2024-09-11\|access-date=2025-03-26\|archive-url=https://web.archive.org/web/20250124094802/https://www.duolingo.com/privacy\|archive-date=2025-01-24\|url-status=live}}</ref> This is also similar for non-AI features, as Duolingo "may also collect and analyze your speech to help [it] understand the effectiveness of [its] lessons and to improve the product", though the data are anonymized.

	It is also mentioned that when completing a lesson, a video of a user's lesson "will be logged by a service called FullStory." This service records usage patterns, device specs, and learning activity, and is only disabled by default for child users. Opting out requires going to FullStory's website.		It is also mentioned that when completing a lesson, a video of a user's lesson "will be logged by a service called FullStory". This service records usage patterns, device specs, and learning activity, and is only disabled by default for child users. Opting out requires going to FullStory's website.

	The policy states the app works with third-party advertising networks to personalize advertising, such as with [[Google]], [[Meta]], [[OAuth]], and [[Unity]]. Personalized advertising can be disabled in the app's settings.		The policy states the app works with third-party advertising networks to personalize advertising, such as with [[Google]], [[Meta]], [[OAuth]], and [[Unity]]. Personalized advertising can be disabled in the app's settings.
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	====Market control====		====Market control====
	Duolingo is the most popular language learning application, ~~with it~~ having 60% market control as of 2025.<ref>{{Cite web\|url=https://www.businessofapps.com/data/language-learning-app-market/\|title=Language Learning App Revenue and Usage Statistics (2025)\|first=David\|last=Curry\|date=2025-02-27\|work=Business of Apps\|access-date=2025-03-15\|archive-url=https://web.archive.org/web/20250112232036/https://www.businessofapps.com/data/language-learning-app-market/\|archive-date=2025-01-12\|url-status=live}}</ref>		Duolingo is the most popular language-learning application, having 60% market control as of 2025.<ref>{{Cite web\|url=https://www.businessofapps.com/data/language-learning-app-market/\|title=Language Learning App Revenue and Usage Statistics (2025)\|first=David\|last=Curry\|date=2025-02-27\|work=Business of Apps\|access-date=2025-03-15\|archive-url=https://web.archive.org/web/20250112232036/https://www.businessofapps.com/data/language-learning-app-market/\|archive-date=2025-01-12\|url-status=live}}</ref>

	==Incidents==		==Incidents==
	===Data breach (2023)===		===Data breach (2023)===
	In January 2023, the data of 2.6 million users ~~was~~ posted to an online hacking forum for $1,500.<ref>{{Cite web\|url=https://www.bleepingcomputer.com/news/security/scraped-data-of-26-million-duolingo-users-released-on-hacking-forum/\|title=Scraped data of 2.6 million Duolingo users released on hacking forum\|first=Lawrence\|last=Abrams\|work=Bleeping Computer\|date=2023-08-22\|access-date=2025-03-26\|archive-url=https://web.archive.org/web/20250309233352/https://www.bleepingcomputer.com/news/security/scraped-data-of-26-million-duolingo-users-released-on-hacking-forum/\|archive-date=2025-03-09\|url-status=live}}</ref> The data ~~was~~ scraped from a vulnerable API, with email addresses, usernames, languages spoken, and real names being included.<ref>{{Cite web\|url=https://haveibeenpwned.com/PwnedWebsites#Duolingo\|title=Pwned websites\|work=haveibeenpwned.com\|access-date=2025-03-26\|archive-url=https://web.archive.org/web/20250309182649/https://haveibeenpwned.com/PwnedWebsites#Duolingo\|archive-date=2025-03-09\|url-status=live}}</ref> A spokesperson for Duolingo stressed that "these records were obtained by data scraping public profile information" and "no data breach or hack has occurred".<ref>{{Cite web\|url=https://therecord.media/duolingo-investigating-dark-web-post-offering-data-from-2-6-million-accounts\|title=DuoLingo investigating dark web post offering data from 2.6 million accounts\|first=Jonathan\|last=Greig\|date=2023-01-23\|work=The Record.\|access-date=2025-03-26\|archive-url=https://web.archive.org/web/20250307194542/https://therecord.media/duolingo-investigating-dark-web-post-offering-data-from-2-6-million-accounts\|archive-date=2025-03-07\|url-status=live}}</ref>		In January 2023, the data of 2.6 million users were posted to an online hacking forum for $1,500.<ref>{{Cite web\|url=https://www.bleepingcomputer.com/news/security/scraped-data-of-26-million-duolingo-users-released-on-hacking-forum/\|title=Scraped data of 2.6 million Duolingo users released on hacking forum\|first=Lawrence\|last=Abrams\|work=Bleeping Computer\|date=2023-08-22\|access-date=2025-03-26\|archive-url=https://web.archive.org/web/20250309233352/https://www.bleepingcomputer.com/news/security/scraped-data-of-26-million-duolingo-users-released-on-hacking-forum/\|archive-date=2025-03-09\|url-status=live}}</ref> The data were scraped from a vulnerable API, with email addresses, usernames, languages spoken, and real names being included.<ref>{{Cite web\|url=https://haveibeenpwned.com/PwnedWebsites#Duolingo\|title=Pwned websites\|work=haveibeenpwned.com\|access-date=2025-03-26\|archive-url=https://web.archive.org/web/20250309182649/https://haveibeenpwned.com/PwnedWebsites#Duolingo\|archive-date=2025-03-09\|url-status=live}}</ref> A spokesperson for Duolingo stressed that "these records were obtained by data-scraping public profile information" and "no data breach or hack has occurred".<ref>{{Cite web\|url=https://therecord.media/duolingo-investigating-dark-web-post-offering-data-from-2-6-million-accounts\|title=DuoLingo investigating dark web post offering data from 2.6 million accounts\|first=Jonathan\|last=Greig\|date=2023-01-23\|work=The Record.\|access-date=2025-03-26\|archive-url=https://web.archive.org/web/20250307194542/https://therecord.media/duolingo-investigating-dark-web-post-offering-data-from-2-6-million-accounts\|archive-date=2025-03-07\|url-status=live}}</ref>

	===Paywalled content (2023)===		===Paywalled content (2023)===
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	According to Duolingo's mission statement, the goal of Duolingo is to make language learning "universally available."<ref>{{Cite web\|url=https://investors.duolingo.com/\|title=Investor Relations\|work=Duolingo Investors\|access-date=2025-03-26\|archive-url=https://web.archive.org/web/20250123181839/https://investors.duolingo.com/\|archive-date=2025-01-23\|url-status=live}}</ref> It states, "We created Duolingo so that everyone could have a chance. Free language education – no hidden fees, no premium content, just free."<ref>{{Cite web\|url=https://www.duolingo.com/info\|title=About Us\|work=Duolingo\|access-date=2025-03-26\|archive-url=https://web.archive.org/web/20250123075248/https://www.duolingo.com/info\|archive-date=2025-01-23\|url-status=live}}</ref> It goes on to say, "We believe true equality is when spending more can't buy you a better education."		According to Duolingo's mission statement, the goal of Duolingo is to make language learning "universally available."<ref>{{Cite web\|url=https://investors.duolingo.com/\|title=Investor Relations\|work=Duolingo Investors\|access-date=2025-03-26\|archive-url=https://web.archive.org/web/20250123181839/https://investors.duolingo.com/\|archive-date=2025-01-23\|url-status=live}}</ref> It states, "We created Duolingo so that everyone could have a chance. Free language education – no hidden fees, no premium content, just free."<ref>{{Cite web\|url=https://www.duolingo.com/info\|title=About Us\|work=Duolingo\|access-date=2025-03-26\|archive-url=https://web.archive.org/web/20250123075248/https://www.duolingo.com/info\|archive-date=2025-01-23\|url-status=live}}</ref> It goes on to say, "We believe true equality is when spending more can't buy you a better education."

	===Pay to win pattern===		===Pay-to-win pattern===
	Recently, some of the timed learning games inside the app are impossible to complete in the time allowed, even for a native speaker of the language. In order to win, the user needs to pay for a subscription to buy more time. This also means that the learning high scores can essentially be bought.		Recently, some of the timed learning games inside the app are impossible to complete in the time allowed, even for a native speaker of the language. In order to win, the user needs to pay for a subscription to buy more time. This also means that the learning high scores can essentially be bought.

	==Products==		==Products==
	*Learn to Read - Duolingo ABC (2021)		*Learn to Read – Duolingo ABC (2021)
	*Duolingo Math (2022)<ref name="blog">{{Cite web\|url=https://blog.duolingo.com/new-subjects/\|title=Duolingo is bringing language, math, and music under one roof!\|date=2023-10-11\|work=Duolingo Blog\|access-date=2025-03-14\|archive-url=https://web.archive.org/web/20250120233940/https://blog.duolingo.com/new-subjects/\|archive-date=2025-01-20\|url-status=live}}</ref>		*Duolingo Math (2022)<ref name="blog">{{Cite web\|url=https://blog.duolingo.com/new-subjects/\|title=Duolingo is bringing language, math, and music under one roof!\|date=2023-10-11\|work=Duolingo Blog\|access-date=2025-03-14\|archive-url=https://web.archive.org/web/20250120233940/https://blog.duolingo.com/new-subjects/\|archive-date=2025-01-20\|url-status=live}}</ref>
	*Duolingo Music (2023)<ref name="blog" />		*Duolingo Music (2023)<ref name="blog" />

Mr Pollo at 13:52, 6 August 2025

2025-08-06T13:52:08Z

← Older revision		Revision as of 13:52, 6 August 2025
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	\|Website=https://duolingo.com		\|Website=https://duolingo.com
	\|Description=A language learning app with a mission to make learning "universally available". In the 2020s, paywalled content and data breaches affected users.		\|Description=A language learning app with a mission to make learning "universally available". In the 2020s, paywalled content and data breaches affected users.
	}}
	~~{{InfoboxCompany~~
	~~\| Name = Duolingo~~
	~~\| Type = Public~~
	~~\| Founded = 2011~~
	~~\| Industry = Education~~
	~~\| Official Website = https://duolingo.com/~~
	~~\| Logo = Duolingo.svg~~
	}}		}}