Duolingo Timeline
Hello!
I did some forum digging (while I still can) to list the important announcements that we saw in the last 10 years.
So it is a timeline of changes on Duolingo. Inspired by the "Duolingo turns 2 years old" post https://archive.ph/5ZY1E which was actually almost 8 years ago...
Duolingo launched its private beta on 30 November 2011.
2011: a TED talk by Luis, https://www.youtube.com/watch?v=-Ht4qiDRZE8 posted on Youtube on 2011-12-06
2012 June 19: the "birthday" of Duo: Duolingo (website version) is available for everyone. Teaching Spanish, German, French (from English), and English for Spanish speakers
2012 Oct - Nov: EN-IT, IT-EN, EN-PT, PT-EN courses added (in beta)
2012-11-13 Duolingo launches iPhone App
2013-05-07 English for French speakers added
2013-10-09 Duolingo launches the Incubator https://archive.ph/MpUQV
2013-11-13 English for German speakers released: the first language made in the Incubator by Duolingo staff https://archive.ph/2nlY7
2013 Nov. Duo the owl gets a new design https://blog.duolingo.com/reshaping-duo/
2013-12-19 the first incubated course created by volunteers: English for Russian speakers https://archive.fo/A85OH
2013 Dec: English from Dutch, English from Turkish released in beta
2014 March English from Japanese https://forum.duolingo.com/comment/2069851
https://archive.ph/MPuWV
2014-06-19 Duo turns two years old, with 30 million users
https://magyarbagoly.blogspot.com/2022/02/duolingo-turns-two-today.html
https://archive.ph/5ZY1E
2014-12-13 Strength bar https://forum.duolingo.com/comment/5780970
https://archive.ph/4pE8P
2014: 26 new courses entered beta in 2014, for example English from Hungarian https://duolingo.fandom.com/wiki/Course_list
2015-01-08 Duolingo for Schools started https://forum.duolingo.com/comment/6318291 https://archive.ph/VcZQ9
2015-09-03 Cartoon characters, but not the same ones you see today https://forum.duolingo.com/comment/10334502/Duolingo-is-getting-more-human https://archive.ph/GzLtk
2016-01-12 https://www.quora.com/Are-there-any-new-features-in-the-works-for-Duolingo/answer/Luis-Von-Ahn
2016: Duolingo English test introduced
https://englishtest.duolingo.com/testingforgood
2016-05-22 https://forum.duolingo.com/comment/15695026/State-of-Monetization-at-Duolingo
https://archive.ph/4LC1l
2016-07-17
Tinycards launched
https://forum.duolingo.com/comment/16875822/Tinycards-is-here
https://archive.ph/CS8pc
2016-12-19 Clubs started - Introducing Duolingo Clubs
https://forum.duolingo.com/comment/19948358/Introducing-Duolingo-Clubs https://archive.fo/Rn7zX
2017-01-12 Immersion removed
https://forum.duolingo.com/comment/20364950
https://archive.ph/XAyel
2017-04-17 Duolingo Plus started
https://forum.duolingo.com/comment/22202238/Introducing-Duolingo-Plus
https://archive.ph/eMKjz
2017-04-19 Activity stream removed
https://forum.duolingo.com/comment/22226909/Activity-Stream-Announcement
https://archive.ph/yYpj7
2017-04-19 A faster website (Karin) https://forum.duolingo.com/comment/22240575
https://archive.ph/GYYhE
2017-05-01 State of Monetization at Duolingo II
https://forum.duolingo.com/comment/22426779/State-of-Monetization-at-Duolingo-II
https://archive.ph/8ZKAu
Health system with 5 hearts introduced
2017-05-31 Gems and Health FAQ
https://forum.duolingo.com/comment/22874501
https://archive.ph/A3Jlv
2017-06-15 The new website (Karin)
https://forum.duolingo.com/comment/23099431
https://archive.ph/2MnMf
2017-06-22 Duolingo Labs https://forum.duolingo.com/comment/23206004
https://archive.ph/R22AX
2017-06-22 Duolingo Stories added
https://forum.duolingo.com/comment/23206010
https://archive.ph/vxHdG
2017-06-23 Health/Gems Feedback + Updates
https://forum.duolingo.com/comment/23219232
https://archive.ph/KrGrK
2017-07-17 update about Duolingo Stories
https://forum.duolingo.com/comment/23601543
https://archive.ph/MDoZD
2017-08-03 Introducing Duolingo Events
https://forum.duolingo.com/comment/23831823
https://archive.ph/QN22p
2017-10-21 Duolingo Plus Coming to Web
https://archive.ph/Y63F4
2018-03-28 big redesign, Crown levels introduced
Crowns FAQ
https://archive.ph/2Pkz1
2018-07-11 Crown levels blog post https://blog.duolingo.com/crown-levels-a-royal-redesign
2018-10-02 AB test: Smart Tips: https://forum.duolingo.com/comment/29092052
https://archive.ph/yMy1e
https://blog.duolingo.com/smart-tips-effective-feedback/
2018- 12-13 Duo the owl redesign https://forum.duolingo.com/comment/29997264 https://archive.ph/OFzWL
2019 Jan: Leagues/Leaderboards started https://forum.duolingo.com/comment/30433123/Leaderboards-now-on-all-Android-devices https://archive.ph/vlmFP
CEFR redesign of the Spanish and French courses
2019-03-29 https://forum.duolingo.com/comment/31483256
https://archive.ph/GODNs
https://archive.ph/7uDdv
2019-04-01 Finnish is seriously in the Incubator now https://forum.duolingo.com/comment/31543476 https://archive.ph/cstOq
2019-04-03 New CEFR-aligned courses https://forum.duolingo.com/comment/31573948
https://archive.ph/Yo3DL
2019-04-22
April 2019 Updates (Clubs were removed around this time)
https://forum.duolingo.com/comment/31849174/April-2019-Updates
https://archive.ph/41mVW
2019 -06-29 Arabic course released https://forum.duolingo.com/comment/32839084
https://archive.ph/Jm1no
2019-08-06 Stories rolling out on iOS https://archive.ph/b13PS
2019-09-01 Gold skills and spaced repetition https://forum.duolingo.com/comment/33937433 https://archive.ph/iLYOM
2019-09-20 First Duocon in London
2020-04-20 Even more stories https://forum.duolingo.com/comment/37941935
https://archive.ph/RQH26
2020-09-01 Tinycards removed
https://support.duolingo.com/hc/en-us/articles/360043909772-UPDATE-Tinycards-Announcement
https://forum.duolingo.com/comment/39200018
https://archive.ph/k1Gp9
2020 Sept: Timed Practice removed https://forum.duolingo.com/comment/42401605/What-happened-to-timed-exercises
https://archive.ph/TRkbt
2020 Duolingo World cartoon characters appear in the lessons https://blog.duolingo.com/building-character/
2020-2021 Duolingo World characters - new TTS voices https://blog.duolingo.com/character-voices/
2020 Grammar skills added https://blog.duolingo.com/language-rules-learning-grammar-on-duolingo/
2020-09-26 second Duocon, online
2020: new courses released in 2020: Finnish from English, German from Dutch, French from Dutch, Esperanto from French
2021 March: volunteer contributor program ended https://blog.duolingo.com/ending-honoring-our-volunteer-contributor-program-2/
2021-05-03 Sending thanks to our former Course Contributors! https://archive.ph/jmwrJ
2021: new courses released in 2021: Yiddish from English, German from Hungarian, French from Japanese
2022-02-21 Haitian Creole course released
2022-03-10 English from Tagalog course released
2022-03-22 Forums removed https://archive.ph/FA26j
Extras:
recently: 2022-03-01 New Korean Course Content! https://archive.ph/2rEEe
2018-10-18 an interesting post: Artificial Intelligence vs. Volunteers, by Larisa_L https://archive.ph/ogx7Y
2011-12-13 oldest post you can find on Duolingo (by Luis) https://archive.ph/qoiYl
2022-02-12 Reflecting on almost 9 years with Duolingo https://archive.ph/A5cQ4
[GUIDE] Avatar rings and Global Ambassadors https://archive.ph/HH2fF
End of 2022 update:
New courses released in 2022:
Haitian Creole (February)
Italian from German (March)
English from Tagalog (March)
Cantonese from Mandarin (July)
English from Bengali (July)
Zulu from English (August)
New course released in 2023:
English from Telugu (August, probably)
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