I've been using this app for more than 2 years (836 days straight to be exact). I find the inconsistency between devices so frustrating. In order to get a yellow crown I need to complete 6 lessons, but 3 others I've checked with need only 5 for the same. Discussions are now locked. 👎 First lessons of unit 6 do not have any "tips" where the lesson is actually taught. The 5th checkpoint test does not have any working audio on audio lessons and forces you to choose an option regardless.