Math Practice App
A gamified mental-math trainer for kids. I built it so my daughter could practice addition, subtraction,
multiplication and division in short sessions with instant feedback, levels and a progress history.
▶ Live demo: math-app-psi.vercel.app
Features
- Four operations, each with its own rules: sums up to 10,000, subtractions that never go negative,
multiplication tables 1–10, and divisions that always have an integer result.
- Configurable ranges and difficulty (easy, medium, hard), so the problems grow with the child.
- Four answer options per problem; distractors are close to the right answer, so guessing doesn't pay off.
- Levels and progress: correct answers unlock the next level, with time tracked per level.
- History of correct and wrong answers and total study time, saved in the browser (
localStorage, no
account or backend).
- Keyboard-first: keys
1–4 pick an operation and answer, so practice flows without the mouse.
- Light/dark mode and fully responsive, from phone to desktop.
Stack
Next.js 15 (App Router) · React 19 · TypeScript · Tailwind CSS · deployed on Vercel.
Running locally
git clone https://github.com/gbflores/math-app.git
cd math-app
npm install
npm run dev # http://localhost:3000
Production build: npm run build && npm run start.
License
MIT © Guilherme Flores
