tontonan
The Best Language Learning Apps (and Why Most Don’t Work)
I did DUOLINGO for 800 days in a row
Duolingo vs Rosetta Stone vs Babbel (Which Language App Wins?)
A Linguist explains how to make duolingo actually work
I did Duolingo's hidden language (Catalan)... but it's a speedrun
Is Duolingo Useful?
Babbel vs Duolingo Review (Which Language App Is Best?)
The ONLY 4 Language Learning Apps That Work | Delete the rest!