How it's built

One API package, one app on top of it

Everything the app knows how to ask for lives in one place: a separate package of 16 modules, one per area of the product, with every response checked as it arrives. If Chowdeck changes something on their side, it fails loudly in one spot instead of quietly breaking a screen.

The app on top of it is Expo and React Native, so iOS and Android come from the same codebase, and updates can go out over the air.

Expo SDK 57: router, dev client, over-the-air updates
React Native 0.86: new architecture
TypeScript: end to end, including the API package
TanStack Query: caching, revalidation, optimistic writes
Zustand: local-first bag state
Reanimated 4: gestures and transitions
FlashList v2: recycled list rendering
Shopify Restyle: design tokens
Zod: runtime contracts on every response
React Native Maps: tracking and address picking

The result

The biggest improvements here are not new features. They are the moments people repeat constantly: searching, scrolling, switching screens, favouriting, checking an order, funding a wallet, waiting for an update.

The idea was simple. Remove the waiting, remove the unnecessary navigation, and make every interaction feel immediate. You can try it from Get the app.

FastChow is an independent rebuild, built as a portfolio piece. It is not affiliated with, endorsed by, or distributed by Chowdeck.