I decided to make a small tool to help me study for my Japanese kanji exams, you can find it at https://slashie.net/kanjidrill/

The way it works is, you upload a dictionary of kanji expressions including the kanji, the furigana, and the meaning, and then it’s going to shoot random questions at you.

I made this in under an hour using claude’s free tier. The biggest work was to translate the Kanji Challenge L8 questions into the JSON format.

There’s possibly an app out there doing almost, but not quite exactly, what I need – I guess that’s a case for 2026 “build your own app” vs finding existing products and adapting to them (and paying for them!). Maybe it works better this being a tiny app for a very specific use.