This is neat.

But, please focus on 3 or 4 languages. Do those well.

Asian languages ( apparently Cantonese isn’t on the list ) are very hard to machine translate.

As is this is just Chat GPT + AWS Translate + AWS Text To Speech. Along with Firebase for user management and a very nice UX front end.

To turn this into a product I’d select maybe 3 languages, French , Spanish, German and hire advisors for all 3. Work on creating a few stories edited by your advisors and add basic gamification/quizzes.

I like the idea though