Duolingo ZU from EN versions:

Trees:
v0: 2020-05-01  ? (Beta)
v0: 2022-07-01  ? (Beta)
v1: 2022-08-25, 20 Skills (20 Different lessons)

Paths:
1.0: 2022-09-10, 20 Skills (20 Different lessons) (13 Units)
1.1: 2023-09-10, 20 Skills (20 Different lessons) (13 Units)
2.0: 2024-03-05, 35 Skills (35 Different lessons) (23 Units)
2.2: 2024-05-01, 35 Skills (35 Different Lessons) (40 units)


tree_zu_en_v2_experiment

https://liuch.github.io/duolingo_courses_overview/
https://duolingo.fandom.com/wiki/Course_list
https://duolingodata.com/
https://duolingodata.com/oldtable.html
https://ardslot.com/duolingocrowns.html

Edited by Mat!/Ozone, 2024-05-02.