Kaarst.lokal, 2025

A local city app for iOS and Android.

For a local platform, we built a cross-platform city app from a shared React Native codebase: with user accounts, wallet and push notifications, based on the customer's Figma designs.

Building a project like this View project

Altes Rathaus provider page with cover image, address, opening hours and the About us, Feed, Vouchers and Menu tabs.

Screens

This is how it looks.

A selection of screens from the product. Swipe through.

Home: what's happening in the city today

Altes Rathaus provider page with cover image, address and opening hours, below it tabs for Feed, Vouchers and Menu. — Providers with profile, hours and offers

Wallet tab for stamp cards with active and full cards from local businesses and their collected stamps. — Wallet: stamp cards from local businesses

Wallet tab for vouchers with personal cashback credits and saved promotions from local providers. — Vouchers and cashback in the same wallet

See for yourself

Problem

What we did.

Implementation of the city app for iOS and Android in six phases, each with its own interim sign-off: app setup, main screens, backend integration with registration, 2FA and social login, provider features, and push notifications with deep links.

Effect in figures

Which was measurable in the end.

01 iOS + Android Cross-platform

02 6 Phasen Per interim acceptance

03 2FA, Social Login User accounts

Information

How it was built.

Platforms: iOS
Android
Tech Stack: React Native
TypeScript
Architecture: A shared React Native codebase for iOS and Android, connected to the client's backend interface.
Duration: 3 months