I built a Duolingo-style app to learn investing in 60 sec a day — built it solo, would love brutally honest feedback

Hey — solo builder here. I've spent the last few weeks building Folient, an app that teaches personal finance and investing the way Duolingo teaches languages: short daily lessons, quizzes, streaks, no fluff.
I tested it with 5 friends first and they said they liked it, but I know that's not real feedback — friends are nice. So I'm posting here instead.
It's live, free, nothing gated: Takes about 2 minutes to try lesson 1.
Genuinely want to know: does this feel useful, or does it feel like every other finance app pretending to be different? Tell me what's wrong with it, I'd rather know now