Great, but needs a few tweaks

As many other mentioned syncing is often hit and miss. Sometimes it will sync sometimes it will not. Never seen such problems with any other app.
Another problem that I personally run into is using long text in flashcards. On smaller screens cards tend to cover “card row” on the buttom of the screen and I cannot see how I reated card before. No total cound of cards. It is hard to judge how many left to study.

AG1981x about Flashcard Hero