Last updated 9 hours ago, automatically updated every 24 hours

Phase 1 (13 courses)

97.5%98%98.6%98.8%96.2%96.2%96.9%
+0.7
Estimated Beta Not enough recent progress to accurately predict
87.4%87.4%87.4%87.4%87.4%87.4%87.4%
Estimated Beta Not enough recent progress to accurately predict
78.6%78.6%78.6%78.9%78.4%78.4%78.3%
-0.1
Estimated Beta Not enough recent progress to accurately predict
54.1%54.1%55.2%55.3%56.1%56.1%56.8%
+0.7
Estimated Beta Feb 18, 2015 (59 days)
48.7%48.9%49%49.9%50.5%51.6%51.6%
Estimated Beta Not enough recent progress to accurately predict
48.9%48.9%48.9%49.1%48.8%48.8%48.8%
-0
Estimated Beta Not enough recent progress to accurately predict
47.3%47.3%47.3%47.3%47.3%47.5%47.8%
+0.3
Estimated Beta Not enough recent progress to accurately predict
32.1%32.1%32.3%32.3%32.3%32.3%32.3%
+0.1
Estimated Beta Not enough recent progress to accurately predict
25.8%27.6%29.5%30.1%30.1%30.1%30.1%
Estimated Beta Aug 04, 2015 (226 days)
14.9%15.3%15.3%15.3%15.2%15.3%15.4%
+0.1
Estimated Beta Jul 01, 2015 (192 days)
10.7%10.7%10.8%10.8%10.8%10.8%11.6%
+0.8
Estimated Beta Not enough recent progress to accurately predict
10%10%10%10%10%10%10%
Estimated Beta Not enough recent progress to accurately predict
5%5%5%5.4%5.7%5.7%5.7%
Estimated Beta Oct 11, 2015 (294 days)

Phase 2 (18 courses)

Stable 353% 926,135 Students
Graduated Feb 01, 2014 in beta Reverse
Stable 320% 715,654 Students
Graduated Mar 03, 2014 soon Reverse
Stable 314% 834,895 Students
Graduated Mar 09, 2014 in beta Reverse
Stable 295% 230,318 Students
Graduated Mar 26, 2014 202+ days Reverse
Stable 290% 231,309 Students
Graduated Mar 31, 2014 soon Reverse
Stable 278% 3,715,118 Students
Graduated Apr 11, 2014 soon Reverse
Stable 267% 258,230 Students
Graduated Apr 21, 2014 soon Reverse
Stable 264% 107,744 Students
Graduated Apr 23, 2014 soon Reverse
Stable 247% 86,012 Students
Graduated May 09, 2014 soon Reverse
Stable 228% 501,715 Students
Graduated May 26, 2014 soon Reverse
Stable 212% 419,382 Students
Graduated Jun 10, 2014 soon Reverse
Stable 172% 329,144 Students
Graduated Jul 16, 2014 complete Reverse
Stable 142% 10,576 Students
Graduated Aug 12, 2014 in dev Reverse
Stable 128% 203,956 Students
Graduated Aug 25, 2014 150+ days Reverse
Stable 128% 125,584 Students
Graduated Aug 25, 2014 150+ days Reverse
Stable 70% 17,318 Students
Graduated Oct 17, 2014 10+ days Reverse
Stable 48% 11,465 Students
Graduated Nov 06, 2014 in dev Reverse
Stable 36% 42,600 Students
Graduated Nov 17, 2014 150+ days Reverse

Phase 3 (21 courses)

24,421,993 Students
Graduated Unknown complete Reverse
24,193,989 Students
Graduated Unknown complete Reverse
15,034,379 Students
Graduated Unknown complete Reverse
10,755,840 Students
Graduated Unknown complete Reverse
9,705,123 Students
Graduated Unknown complete Reverse
6,245,767 Students
Graduated Unknown complete Reverse
4,222,670 Students
Graduated Unknown complete Reverse
4,020,644 Students
Graduated Unknown complete Reverse
3,008,985 Students
Graduated Unknown complete Reverse
2,092,455 Students
Graduated Nov 06, 2014 in dev Reverse
1,844,838 Students
Graduated May 16, 2014 complete Reverse
1,827,380 Students
Graduated Unknown complete Reverse
1,468,528 Students
Graduated May 15, 2014 in dev Reverse
970,807 Students
Graduated Dec 10, 2014 in dev Reverse
854,005 Students
Graduated May 15, 2014 in beta Reverse
664,823 Students
Graduated Jun 30, 2014 in dev Reverse
New
544,735 Students
Graduated Dec 17, 2014 44+ days Reverse
494,002 Students
Graduated Jun 30, 2014 in dev Reverse
350,777 Students
Graduated Sep 16, 2014 complete Reverse
218,364 Students
Graduated Dec 02, 2014 in dev Reverse
84,000 Students
Graduated Dec 12, 2014 44+ days Reverse
Total Registered Language Course Students: 121.79 million
Total Active Language Course Students: 26.19 million (approx)

FAQ
Q: When will Language X be added?
A: Short answer we don't know. Duolingo relies on volunteers to build new courses, therefore your desired language will only be added when there are enough capable volunteers to build the course. Duolingo has typically followed a pattern of giving priority to new English courses first. Once that course is complete and tested, the same team can then begin reversing the course, this is the only indication we have of when your course may be added.

Q: How can you know when some reverse courses will be added?
A: They are predictions, we know that Duolingo added the new courses for English speakers after their counter reverse courses had been in beta for 60-100 days, so its reasonable to assume a similar pattern will follow in future. With that said all dates and times on this page are independent of Duolingo, please treat them as such. Never quote dates and times from this page to complain to the Duolingo team or contributors.

Q: How long does a course take to complete?
A: Typically it takes 3-6 months for a course to make its way into beta, it all depends on the amount of free time the team can devote to the new course.

Q: Can I help?
A: If you bilingual and able to write at the level of a native speaker of 2 or more languages you may be able to contribute, follow link to submit an application to the Duolingo team. Otherwise you can help by simply learning a language in beta and submitting any errors or bugs you encounter.

All data is provided Independent of Duolingo & estimated dates may be inaccurate
Created by andrewmof | Designed by ElOtroMiqui | Chart Created by yonoleo | Inspired by J-Steven & Morgengrauen