A one-person app studio — Sigma Stack
Mobile apps people actually pay for.
Sigma Stack is a one-person mobile app studio building consumer and B2B apps — designed, built, and supported by the same pair of hands.
Design, build, and support — from one pair of hands
- React Native
- Expo
- TypeScript
- Next.js
- RevenueCat
- Supabase
- App Store
- On-device AI
- apps on the App Store
- 3apps on the App Store
- developer products
- 3developer products
- shipping since 2024
- 2yr+shipping since 2024
- React Native · Expo
- iOSReact Native · Expo
Apps
Apps worth downloading
Consumer apps and games built with the same care as the studio's client work — calm design, honest monetisation, and no dark patterns.
Products
Templates that skip the boilerplate
Battle-tested React Native starters and UI kits — buy once, clone, and start on the feature that actually matters.
Services
Or work with me directly
Beyond the templates, I take on a handful of client projects — building, auditing, and launching React Native apps end to end.
Why choose us
Small studio. Sharp opinions.
Ship fast, polish faster
Small scope, weekly releases, no feature graveyards. An app in your hands beats a roadmap in a deck.
Charge honestly
Fair one-time purchases and subscriptions that earn their renewal. No dark patterns, no hostage data.
Support from the builder
Every support email is answered by the person who wrote the code. Bugs get fixed, not ticketed.
How it works
A calm, predictable process
No black boxes. From first call to launch, you always know what's happening and what's next.
Scope
A quick call to understand the goal, then a clear proposal with scope, timeline, and price. No surprises.
Build
Weekly check-ins and shippable progress — you watch the app evolve, not a status doc.
Ship
Launch to the stores, hand over clean code and docs, and support the transition.
From the blog
Notes on building & shipping
Practical writing on React Native, AI, monetisation, and getting apps out the door.
Newsletter
Ship better mobile apps
Occasional, no-fluff notes on React Native, AI, and shipping apps that pay for themselves. Plus new templates and freebies first.
No spam. Unsubscribe anytime.
FAQ
Questions, answered
Three things: it ships its own mobile apps and games, it sells developer products like React Native starters and UI kits, and it takes on a small number of client projects — app development, audits, and launches.
Yes. The studio takes on a handful of client builds at a time — React Native (Expo) apps designed, built, and submitted to the stores end to end. Start on the Services page or get in touch.
The React Native Starter and UI kits are one-time purchases with free updates delivered to the same repo you already have access to. No subscriptions.
Every app listed here is live on the App Store today — Heirloom, Arrow Escape, and Arrow Trails. Android versions are in the works; join the newsletter and you'll hear when they land.
A one-person studio — the same person designs, builds, and supports everything. No account managers, no handoffs, no outsourced code.
Let's build something people pay for
Whether you want a template to start faster, an app you can download, or a studio to build yours — Sigma Stack is one message away.