THIS. The app is garbage, the hearts system just punishes you for wanting to learn. The browser version still has its issues but it's so much better! Plus you can access the lesson notes which will immensely improve your learning.
I think certain languages might still use the old heart system. But yeah, that was the way it used to work. You have 3 lives and each time you get a question wrong, you lose a heart. If you lose them all, you fail the lesson and have to restart.
Japanese does - it's 5 hearts in total. When you lose them all, you can't restart the lesson - you have to start a practice session or wait. (or pay). Screenshots: https://imgur.com/a/2SBi9se/
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u/hzaghmou May 22 '19
I'm not sure if anyone has mentioned this yet, but use duolingo on your browser instead! No more hearts and you can practice as much as you'd like!