I built Finly because school covers personal finance for one semester and most kids forget it by graduation. I wanted something that stays useful — lessons you can come back to when you actually need them. It has 90+ lessons across budgeting, credit, taxes, investing, and finance careers (IB, VC, PE, quant). Split into two age tiers: 8-12 and 13-17 with different content for each. XP system, streaks, leaderboard, and a stock portfolio simulator where you invest $10,000 in real historical data and watch it play out. No account needed to start. No ads, no paywall, ever. Incorporated as a nonprofit. Built with Next.js, Supabase, Vercel. 190 Playwright tests. Happy to answer questions about the build or the content

Did you vibe code this? I see people ask all the time “so where are all the vibe coded tools and softwares that are being created by this productivity boost???” Maybe this is one of them and they can begin to see the value. If not, it’s even more impressive.

Great job from what I can tell. I’ve wanted something like this since my early twenties when I realized I had no financial literacy and I thought schools should be required to teach it.