Last updated 22 hours ago, automatically updated every 24 hours

Phase 1 (11 courses)

93.8%93.1%93.1%92.8%91.9%92.2%92.2%
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%77.5%77.5%77.5%77.5%77.6%77.8%
+0.2
Estimated Beta Not enough recent progress to accurately predict
49.3%49.3%49.3%49.3%49.3%49.5%49.6%
+0.1
Estimated Beta Not enough recent progress to accurately predict
42.2%42.2%42.6%43%43.4%44.4%45.9%
+1.5
Estimated Beta Jan 17, 2015 (55 days)
41.3%41.3%41.3%41.3%41.3%41.3%41.3%
Estimated Beta Not enough recent progress to accurately predict
32.2%32.3%34.8%36.5%36.9%37.3%37.3%
Estimated Beta Mar 01, 2015 (98 days)
25.4%25.6%26%26%26%26.2%26.7%
+0.5
Estimated Beta Not enough recent progress to accurately predict
19.7%21%21.3%23%23.9%23.9%23.9%
Estimated Beta Jun 28, 2015 (217 days)
8.5%8.5%8.5%9.2%9.6%9.5%9.9%
+0.4
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 349% 878,423 Students
Graduated Jan 08, 2014 in dev Reverse
Stable 323% 840,053 Students
Graduated Feb 01, 2014 in beta Reverse
Stable 290% 635,366 Students
Graduated Mar 03, 2014 soon Reverse
Stable 283% 743,923 Students
Graduated Mar 09, 2014 in beta Reverse
Stable 264% 195,522 Students
Graduated Mar 26, 2014 209+ days Reverse
Stable 259% 199,217 Students
Graduated Mar 31, 2014 soon Reverse
Stable 247% 3,347,756 Students
Graduated Apr 11, 2014 soon Reverse
Stable 236% 232,702 Students
Graduated Apr 21, 2014 soon Reverse
Stable 234% 84,336 Students
Graduated Apr 23, 2014 soon Reverse
Stable 231% 69,614 Students
Graduated Apr 25, 2014 soon Reverse
Stable 216% 72,724 Students
Graduated May 09, 2014 soon Reverse
Stable 205% 456,229 Students
Graduated May 19, 2014 soon Reverse
Stable 197% 423,161 Students
Graduated May 26, 2014 soon Reverse
Stable 181% 323,538 Students
Graduated Jun 10, 2014 soon Reverse
Stable 141% 257,114 Students
Graduated Jul 16, 2014 complete Reverse
Stable 112% 7,392 Students
Graduated Aug 12, 2014 in dev Reverse
Stable 97% 83,710 Students
Graduated Aug 25, 2014 150+ days Reverse
Stable 97% 136,114 Students
Graduated Aug 25, 2014 150+ days Reverse
Stable 74% 128,280 Students
Graduated Sep 15, 2014 6+ days Reverse
Stable 39% 8,414 Students
Graduated Oct 17, 2014 41+ days Reverse
Stable 17% 7,603 Students
Graduated Nov 06, 2014 63+ days Reverse
New
Stable 5% 11,812 Students
Graduated Nov 17, 2014 150+ days Reverse

Phase 3 (17 courses)

23,101,189 Students
Graduated Unknown complete Reverse
22,751,235 Students
Graduated Unknown complete Reverse
14,224,303 Students
Graduated Unknown complete Reverse
10,176,548 Students
Graduated Unknown complete Reverse
9,144,265 Students
Graduated Unknown complete Reverse
5,941,997 Students
Graduated Unknown complete Reverse
3,986,720 Students
Graduated Unknown complete Reverse
3,764,660 Students
Graduated Unknown complete Reverse
2,878,333 Students
Graduated Unknown complete Reverse
1,842,275 Students
Graduated Nov 06, 2014 in dev Reverse
1,672,054 Students
Graduated May 16, 2014 complete Reverse
1,666,358 Students
Graduated Unknown complete Reverse
1,207,576 Students
Graduated May 15, 2014 in dev Reverse
757,825 Students
Graduated May 15, 2014 in beta Reverse
566,489 Students
Graduated Jun 30, 2014 in dev Reverse
404,282 Students
Graduated Jun 30, 2014 in dev Reverse
287,263 Students
Graduated Sep 16, 2014 complete Reverse
Total Registered Language Course Students: 113.52 million
Total Active Language Course Students: 24.41 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