Hi All,
This is a bit of a personal quest. I am a developer who has been trying to learn Japanese and there are several services that provided help such as Duolingo, Memrise, LingoDeer, etc. However I personally love the look and feel of Duolingo, though its not quite my style of study. The creator of Duolingo used to have another app more my speed called tiny card. This was a flash card system that behaved very similar to Duolingo though you could build your own decks for study. I intend to recreate this app through prompting with Claude. Here is the progress post for a sample of the flash card component it built in react(will be converting to react native).