“the best way to learn vocabulary”
This app is BY FAR the best way to learn vocabulary. Clean design, no ads, and the most important feature is that the algorithm just works like a charm! Out of a 30 min training session 25 mins will be productive time spent actually learning. Also you get to learn the most important words you need to get working knowledge of the language. In other apps like anki, you end up spending far too much time with settings etc.
Jess from San Francisco learning Spanish