This app is definitely something you should get if you’re learning Japanese. It’s my go-to, before even translator apps, when writing in Japanese. The kanji handwriting system is one of the best out there, and the apps flashcards are super useful. It even lets you study by JLPT level, part if speech, or scholl year learned (in the case of kanji)
I’ve had this app for so long I don’t remember if it’s free or not, but I promise it’s worth getting regardless.