Free AI abacus tutor for mental math. Made by an 11yo. - Aries AI

Hey Product Hunt! I'm Liza, 11 years old, building from India. I made Aries AI because I learn the abacus method myself, and I couldn't find a single app that actually taught it. Every "abacus app" out there just quizzes you on speed. None of them teach the formulas (Big Friends, Small Friends, Combination) — the actual logic that makes mental math click. So I built it. Four modes: - An interactive visual abacus you can click and drag - Oral practice where the app speaks number sequences and you keep the running total in your head (closest thing to a real teacher reading numbers out) - Structured formula lessons covering Big Friends, Small Friends, and Combination - A conversational AI tutor (OpenAI) that re-explains anything that doesn't click It's free. Built solo on OpenAI + Supabase + Render + Razorpay + Netlify. Currently desktop/laptop browser only — mobile is the very next thing I'm building. I'd love feedback from: - Anyone who teaches math or abacus - Parents whose kids are learning mental math - Anyone learning mental arithmetic themselves Be kind — this is my first SaaS ✦