Currently, no lesson contains every kanji supported by Ringotan.  We should create one that does.

Before trying this app, I'd been learning in school grade order. But that wasn't listed. I tried a few of the listed learning methods in the startup wizard, but all of them seem to make me put in a mix of kanji I do and don't know in the same basket. 

I wish I could write whatever I want, undoing any mistakes, and explicitly say when I'm done. It would feel a lot more natural and akin to using a pencil and eraser that way vs getting blasted with "Wrong!" and given the answer the moment my hesitation makes me mess up. Plus, if I try to draw a second stroke after my "wrong" one, it immediately skips me to the next question, which feels weird to me. 

Please consider adding an option to add custom kanji decks rather than only providing the preset decks to study from. I would like to be able to export kanji learned through jpdb.io through their api and be able to study them in Ringotan. Ideally, this import would be done automatically by interfacing with a Ringotan api but any functionality for custom decks would be extremely useful. If there isn't a planned api for Ringotan, a simple interface where the user would paste all kanji to be included in the custom deck would work. Alternatively, Ringotan could read from a text

Eg. should be able to select a bunch at once and marked them as "known" or "unknown"