Building a mobile app is hard. Most developers either take 6+ months, charge agency rates you can't afford, or hand you a brittle codebase that breaks the moment real users show up. You need someone who's done it before , with real apps, real users, and real results.

I've shipped 3 production mobile apps currently live on the App Store and Google Play. Thousands of active users. Real transactions. Real workouts. Real GPS data. Not portfolio pieces, actual products people use every day.

What I build: I specialize in cross-platform mobile app development using React Native — one codebase, two stores, full native performance. iOS and Android from a single build, saving you time and money without sacrificing quality. From your first wireframe to your App Store approval, I handle every step.

Types of apps I build: 📱 Consumer Apps — Social, fitness, lifestyle, marketplace, and community apps with beautiful UIs and smooth UX 💳 Fintech & Payment Apps — Stripe, PayPal, Plaid integration, subscription billing, in-app purchases, financial dashboards 🏃 Health & Fitness Apps — Apple HealthKit, Google Fit integration, step tracking, workout logging, real-time biometrics 🗺 GPS & Location Apps — Real-time GPS tracking, geofencing, map rendering, route matching, location-based features 🛒 Marketplace Apps — Multi-role platforms (buyers, sellers, admins), real-time messaging, reviews, advanced search, multi-currency 🎥 Real-Time & Video Apps — WebSocket-based live features, 1-on-1 video coaching, live streaming, real-time notifications

Proven live apps: GYMYG (USA) — Full fitness platform with live trainer and client iOS/Android apps, 1-on-1 video coaching, real-time workouts, subscription billing, and analytics dashboard. Thousands of active users. Currently live on App Store and Play Store.

We Step Together (USA) — Fitness fundraising app with Apple HealthKit and Google Fit integration, step-tracking donations, Stripe payments, and real-time campaign tracking. Live on both stores with active fundraising campaigns.

Mile Matcher (Ireland) — Running and GPS app with real-time GPS race tracking, AI bot races, friend challenges, and race matchmaking. Live app with an active community of runners.

My stack: Mobile: React Native, Expo, TypeScript UI/UX: Custom components, Tailwind/NativeWind, Reanimated Backend: Node.js, NestJS, Python, REST & GraphQL APIs Real-time: WebSockets, Socket.io, event-driven systems Health: Apple HealthKit, Google Fit, Core Motion Payments: Stripe, PayPal, in-app purchases Cloud: AWS, Firebase, Vercel, GCP Store Submission: Full App Store Connect + Google Play Console setup and submission

What's included in every project: ✅ Full UI/UX design or implementation from your designs ✅ iOS + Android from a single React Native codebase ✅ Backend API development and database architecture ✅ Push notifications (local and remote) ✅ App Store and Google Play submission, I handle it all ✅ Performance optimization and device testing ✅ Security hardening and data protection ✅ Full source code ownership and documentation ✅ 2 weeks of post-launch support included

Your safety net: ✅ Fixed-cost Phase 1 — see working screens before committing to full build ✅ Money-back guarantee if MVP doesn't meet scope ✅ Weekly video calls and async updates throughout ✅ Two-week escape clause , walk away with no penalty if it's not working

Who this is for: You're a founder with a mobile app idea and a tight timeline. You're a startup that needs a cross-platform app without paying for two separate native teams. You're a business that needs to add a mobile layer to your existing web product. You're an entrepreneur who wants an app that's actually live, not perpetually "almost ready."

I don't just write code. I build products. Products that pass App Store review, handle real users, process real money, and scale when things get busy.

Ready to build your app? Message me and let's get started. I'll give you a clear scope, timeline, and cost , usually within 24 hours.