Duolingo
Rank Teaching For Speakers of Number of Learners Release date
1 English Spanish 27,600,000 2012-03-30 - 30 March 2012
2 Spanish English 24,200,000 2011-11-30 - 30 November 2011
3 French English 13,600,000 2012-06-19 - 19 June 2012
4 English Portuguese 10,800,000 2012-10-30 - 30 October 2012
5 German English 7,820,000 2011-11-30 - 30 November 2011
6 Japanese English 6,430,000 2017-05-18 - 18 May 2017
7 English Russian 5,720,000 2015-11-02 - 2 November 2015
8 Italian English 5,300,000 2012-11-13 - 13 November 2012
9 English Arabic 4,520,000 2014-05-09 - 9 May 2014
10 English French 4,430,000 2013-05-07 - 7 May 2013
11 French Spanish 3,880,000 2014-01-10 - 10 January 2014
12 Korean English 3,670,000 2017-10-10 - 10 October 2017
13 Chinese English 3,560,000 2017-11-15 - 15 November 2017
14 Russian English 3,300,000 2015-11-02 - 2 November 2015
16 English Chinese 3,190,000 2014-04-11 - 11 April 2014
15 English Turkish 3,050,000 2013-12-29 - 29 December 2013
17 Spanish Portuguese 2,650,000 2014-03-09 - 9 March 2014
18 Italian Spanish 2,510,000 2014-09-15 - 15 September 2014
19 English German 2,280,000 2013-11-27 - 27 November 2013
20 Portuguese English 2,240,000 2012-10-30 - 30 October 2012
Language courses -- List of courses by number of learners
As of March 2020 [ update ] , 94 courses are available to start learning , and 10 are available to be notified when they are released . [ 103 ]
Duolingo ( ) is a platform that includes a language-learning website and app, as well as a digital language proficiency assessment exam. The company uses the freemium model; the app and the website are accessible without charge, although Duolingo also offers a premium service for a fee.