Also from Hall Dev Work · Apps & games
Hall Dev Work LLC is one developer — me, David Hall. I build cross-platform iOS and Android apps in React Native and Expo, and I take them all the way through App Store review. Available for contract work and agency overflow.
Work
Two apps, designed and built by one person — front end, backend, and everything in between.
iOS app
React Native and Expo on the front end, a Fastify API behind it, StoreKit subscriptions for billing, HealthKit for activity data, and EAS Build driving releases. Submitted to the App Store.
Designed, built, and shipped solo — front end, backend, subscriptions, and store submission.
Coming soonBoxing training app
A boxing training companion — round timer, combo caller, and guided workout rounds, with on-device pose detection driving live form feedback. Forked from the same React Native and Expo codebase into a standalone app.
Built solo — same React Native and Expo toolchain, front end to release pipeline.
In developmentWhat I do
Cross-platform iOS and Android apps in React Native and Expo — from the first TestFlight build through store review. Subscriptions, native integrations, and release pipelines included.
A working proof of your idea in weeks, not months. Put the core experience on a real device before committing a production budget.
Web apps and dashboards that share a codebase and design system with the mobile product where that makes sense.
Engine work I still take on — it just isn't the headline.
End-to-end work in Unreal Engine 5 and Godot 4, from vertical slice through release.
Character controllers, hit detection, combo and juggle systems, enemy AI, camera and lock-on.
Editor tooling, asset pipelines, and build automation.
Contact
Tell me about it. You talk to the person writing the code, because that's the only person there is. NDAs welcome.
