Last updated 22 hours ago, automatically updated every 24 hours

Phase 1 (11 courses)

91.9%92.2%92.2%93.6%94.4%94.1%94.2%
+0.1
Estimated Beta Not enough recent progress to accurately predict
89.2%89.2%89.2%89.2%89.2%89.2%89.2%
Estimated Beta Not enough recent progress to accurately predict
77.5%77.6%77.8%77.8%77.8%77.7%77.9%
+0.1
Estimated Beta Not enough recent progress to accurately predict
49.3%49.5%49.6%49.6%49.7%49.7%49.7%
+0
Estimated Beta Not enough recent progress to accurately predict
43.4%44.4%45.9%46.1%45.9%46.8%47.2%
+0.4
Estimated Beta Feb 13, 2015 (78 days)
41.3%41.3%41.3%41.3%41.3%41.7%41.7%
Estimated Beta Not enough recent progress to accurately predict
36.9%37.3%37.3%37.3%38%38.2%39.2%
+1
Estimated Beta Feb 24, 2015 (89 days)
26%26.2%26.7%27.3%27.6%27.6%27.7%
+0.1
Estimated Beta Not enough recent progress to accurately predict
23.9%23.9%23.9%23.9%23.9%23.9%23.9%
Estimated Beta Jul 24, 2015 (239 days)
9.6%9.5%9.9%9.9%10.1%10%9.7%
-0.3
Estimated Beta Not enough recent progress to accurately predict
6.6%6.6%6.6%6.6%6.6%6.6%6.6%
Estimated Beta Not enough recent progress to accurately predict

Phase 2 (22 courses)

Stable 353% 889,867 Students
Graduated Jan 08, 2014 in dev Reverse
Stable 327% 851,251 Students
Graduated Feb 01, 2014 in beta Reverse
Stable 294% 644,198 Students
Graduated Mar 03, 2014 soon Reverse
Stable 287% 757,079 Students
Graduated Mar 09, 2014 in beta Reverse
Stable 269% 199,700 Students
Graduated Mar 26, 2014 208+ days Reverse
Stable 263% 203,235 Students
Graduated Mar 31, 2014 soon Reverse
Stable 251% 3,386,586 Students
Graduated Apr 11, 2014 soon Reverse
Stable 240% 235,784 Students
Graduated Apr 21, 2014 soon Reverse
Stable 238% 87,534 Students
Graduated Apr 23, 2014 soon Reverse
Stable 236% 71,430 Students
Graduated Apr 25, 2014 soon Reverse
Stable 220% 74,164 Students
Graduated May 09, 2014 soon Reverse
Stable 209% 467,469 Students
Graduated May 19, 2014 soon Reverse
Stable 202% 432,709 Students
Graduated May 26, 2014 soon Reverse
Stable 185% 336,822 Students
Graduated Jun 10, 2014 soon Reverse
Stable 146% 265,792 Students
Graduated Jul 16, 2014 complete Reverse
Stable 116% 7,766 Students
Graduated Aug 12, 2014 in dev Reverse
Stable 102% 145,284 Students
Graduated Aug 25, 2014 150+ days Reverse
Stable 102% 89,670 Students
Graduated Aug 25, 2014 150+ days Reverse
Stable 79% 140,174 Students
Graduated Sep 15, 2014 1+ days Reverse
Stable 43% 9,688 Students
Graduated Oct 17, 2014 37+ days Reverse
Stable 21% 8,153 Students
Graduated Nov 06, 2014 59+ days Reverse
Stable 9% 16,264 Students
Graduated Nov 17, 2014 150+ days Reverse

Phase 3 (17 courses)

23,249,915 Students
Graduated Unknown complete Reverse
22,924,689 Students
Graduated Unknown complete Reverse
14,319,337 Students
Graduated Unknown complete Reverse
10,254,552 Students
Graduated Unknown complete Reverse
9,208,423 Students
Graduated Unknown complete Reverse
5,977,857 Students
Graduated Unknown complete Reverse
4,015,160 Students
Graduated Unknown complete Reverse
3,797,202 Students
Graduated Unknown complete Reverse
2,894,177 Students
Graduated Unknown complete Reverse
1,871,663 Students
Graduated Nov 06, 2014 in dev Reverse
1,693,776 Students
Graduated May 16, 2014 complete Reverse
1,685,668 Students
Graduated Unknown complete Reverse
1,239,166 Students
Graduated May 15, 2014 in dev Reverse
770,455 Students
Graduated May 15, 2014 in beta Reverse
578,263 Students
Graduated Jun 30, 2014 in dev Reverse
415,206 Students
Graduated Jun 30, 2014 in dev Reverse
294,705 Students
Graduated Sep 16, 2014 complete Reverse
Total Registered Language Course Students: 114.51 million
Total Active Language Course Students: 24.62 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