Mobile App Development
iOS & Android app developer — one codebase, both stores
I build mobile apps with React Native and Expo, so iOS and Android ship from a single TypeScript codebase without paying for two separate native teams. I own the whole lifecycle: mobile UI, shared backend, push notifications, background location/offline sync, and App Store / Google Play submissions.
01 — Proven in production
Real client outcomes
Word of Mouth (United States)
Built the production social food-discovery app from scratch in React Native & Expo with proximity feeds and push notifications.
Direct Transport Solutions (Australia)
Built the React Native driver app streaming real-time GPS telemetry over WebSockets and capturing digital Proof of Delivery.
Callture (Gupshup Toronto)
Building a cross-platform social & community product across web and native mobile stores from a unified architecture.
02 — Scope & capabilities
What you get
- Cross-platform iOS and Android apps built with React Native and Expo
- Shared TypeScript backends, APIs and web admin dashboards
- Personalized feeds, proximity discovery, maps and background GPS tracking
- Push notifications (APNs / FCM), in-app chat and offline-first storage
- End-to-end App Store and Google Play submission, signing and OTA updates via Expo EAS
03 — Engineering workflow
How we ship it
- Step 01
Shared Schema & Navigation Spec
We define screen flows, offline state requirements, and shared TypeScript API types between mobile and web.
- Step 02
Testable Builds on Your Phone
Using Expo EAS and TestFlight / Internal Testing, you can tap through real builds on your own iPhone or Android device every week.
- Step 03
Native Integrations & Polish
Push notifications, camera/QR scanning, background location, deep linking, and 60fps gesture animations.
- Step 04
App Store & Play Store Approval
I handle certificates, provisioning profiles, store screenshots, privacy declarations, and Apple/Google review feedback until approved.
04 — Case studies
Real projects
Direct Transport Solutions
90% Automated Logistics Platform
Replaced a 90% manual logistics workflow with one platform: admin portal, customer portal and a React Native driver app with live GPS tracking.
Read the case study
Word of Mouth
Cross-Platform Social Food Discovery App
Launched a cross-platform iOS and Android food discovery app with React Native, Next.js, and Supabase featuring a personalized feed and admin portal.
Read the case study
Noorly
Distraction-Free Glassmorphism Tasbeeh Companion
Built an offline-first Tasbeeh mobile app with Expo, TypeScript, and SQLite featuring 60fps glassmorphism UI, haptic feedback, and immersive mode.
Read the case study05 — Technical architecture
Engineering deep-dives
How to Build an Offline-First Cryptographic QR Ticket Validator with Ed25519, Hash Chaining & Fastify
How I architected NodusTickets: an offline-first SaaS ticket validation platform using Ed25519 signatures, SHA-256 hash chaining, and Fastify to stop QR ticket fraud without internet.
Architecting Real-Time Fleet & Driver GPS Tracking with React Native, WebSockets & Supabase RLS
Lessons from building Direct Transport Solutions' logistics platform as sole engineer: React Native driver telemetry, WebSockets, PostgreSQL & Supabase RLS.
06 — FAQ
Mobile App Development: questions
Do you build native or cross-platform apps?
Cross-platform with React Native and Expo. One TypeScript codebase covers both iOS and Android, cutting development cost nearly in half and keeping features 100% in sync while rendering true native UI components.
Can you publish the app to the Apple App Store and Google Play Store?
Yes. I handle the entire release pipeline — Apple Developer and Google Play Console setup, code signing, store listings, review compliance, and over-the-air (OTA) updates through Expo EAS.
Can you also build the backend and web admin panel?
Yes — most mobile projects I take on include the PostgreSQL/Supabase or Node.js API and a Next.js web admin dashboard so your team can manage users, content, and analytics.
Does React Native work for complex features like live GPS or offline mode?
Yes. I have shipped React Native apps with background GPS fleet tracking over WebSockets (Direct Transport Solutions) and offline-first local storage.
Other services
→ — What's next
Got an idea?
Let's ship it.
Tell me what you're building. No sales team, no hand-offs — just the engineer who'll build it.
Rafay KhanYou'll talk to me directly