foxling.oxyloop.comiOS, Android and web
Foxling
Brain training that works offline. Nine short games, ten minutes a day, no ads and no tracking.
01What it does
- Nine short games for ten-minute daily sessions
- Plays with no signal
- No ads and no third-party tracking
- Progress tracking and subscriptions
- Account deletion that removes everything
02Stack
- Expo
- expo-router
- Next.js
- NestJS
- Drizzle ORM
- PostgreSQL
- zod
- TypeScript
03How it is built
A pnpm monorepo: an Expo client for iOS and Android, a Next.js web app and a NestJS API with Drizzle and PostgreSQL. Shared zod contracts: the API validates with them and every app infers its types from them.