Right now it takes 5+ minutes to generate the database, making trivial changes extremely difficult to test.  Improve the speed so future changes can be made.

Last few chapters have no name, check 14 ex is wrong type

If you get a mastered kanji correct it's supposed to be hidden for the rest of the lesson, but it's not...

No stacktrace available

The app currently doesn't use the network, but requests permissions anyways

Bug appears to be caused by requiring all kanji in a word to be present to add word to review.  Need to rearchitect that

Right now it stays yellow

The layout when rotating the phone looks horrible.  Create a new layout, or prevent rotation.