Hall Dev Work LLC · Independent studio, one developer
I build mobile apps that ship.
Hall Dev Work LLC is one senior 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.
About
One developer. Working builds every week.
Hall Dev Work LLC is me — David Hall. One senior developer who would rather hand you a running build than a slide deck. I build cross-platform iOS and Android apps in React Native and Expo, write the backends they need, and take them through App Store review myself.
No account managers and no telephone game — there's nobody to pass a message to. You talk to the person writing the code because that's the only person there is. Scope, estimates, and the honest trade-offs come straight from me, on the first call rather than three sprints in.
That's the whole pitch: focus, accountability, and zero overhead. I take on a small number of projects at a time so the one in front of me actually gets finished.
Working builds, not documents
Every milestone is something you can run on a real device.
One developer, end to end
The person you brief writes the code. Nothing is lost in a handoff.
Fast, honest iteration
Short loops, weekly builds, and straight answers about scope and cost.
Flexible engagements
Fixed-scope projects, agency overflow, or a short prototype sprint.
Work
Built and shipped solo.
From an empty repo to App Store submission — front end, backend, and release, all by one person.
What I do
Services built around getting you to launch, fast.
From first prototype to the App Store — or any piece in between.
Mobile App Development
Cross-platform iOS and Android apps in React Native and Expo — from the first TestFlight build through store review. Subscriptions, native integrations, and EAS release pipelines included.
Rapid Prototyping
A working proof of your idea in weeks, not months. Put the core experience on a real device and validate it before committing a production budget.
Web
Marketing sites, web apps, and dashboards — sharing a codebase and design system with the mobile product where that makes sense.
Also: game development
Engine work I still take on — it just isn't the headline.
Game Development
End-to-end work in Unreal Engine 5 and Godot 4, from vertical slice through release.
Combat & Gameplay Systems
Character controllers, hit detection, combo and juggle systems, enemy AI, camera and lock-on.
Tools & Pipelines
Editor tooling, asset pipelines, and build automation.
How I work
A process designed to de-risk your project.
You'll know where things stand at every step — because you'll be using the build.
Discovery
A call and a short written brief. I scope goals, constraints, timeline, and budget — and tell you honestly if I'm not the right fit.
Prototype
A working proof of the core idea, fast. This is where the expensive surprises surface — while they're still cheap to fix.
Build & iterate
Weekly builds you can use, a direct line to me, and scope adjustments made in the open.
Ship & support
Launch, documentation, and clean handoff — with optional ongoing support if you want me to stick around.
Contact
Let's build something.
Have an app that needs building, an idea that needs a prototype, or a project that needs rescuing? Tell me about it. I reply to every serious inquiry within two business days.