Mobile App Development

One Codebase. iOS and Android. Full Ownership.

We build cross-platform mobile apps with React Native and Expo — shipped to both the App Store and Google Play from a single, maintainable codebase. Faster to build, cheaper to maintain, native-quality UX.

What you get

React Native + Expo — single codebase for iOS and Android

Native-quality animations using Reanimated 3 and Gesture Handler

Expo EAS for over-the-air updates and CI/CD pipeline

Push notifications via Expo Notifications or Firebase

Offline-first architecture with local SQLite or MMKV storage

Secure biometric authentication (Face ID / fingerprint)

App Store and Google Play submission included

TypeScript throughout — type-safe API calls and navigation

100% code ownership — no vendor lock-in

Post-launch 30-day bug fix support included

How it works

A clear, predictable process so you always know what's happening next.

1
1

Scoping

We define screens, user flows, third-party integrations, and App Store requirements before design begins.

2
2

UI design

Figma prototypes for every screen, including loading, empty, and error states.

3
3

Build

Incremental builds with TestFlight / internal track access so you can test on real devices throughout.

4
4

Submit & hand-off

We handle the App Store and Google Play submissions. Full repo + CI/CD pipeline handed over.

Common questions

Do you build for iOS and Android?

Yes — both, from a single React Native codebase. This keeps build cost lower and the two apps perfectly in sync.

How long does an app take to build?

A focused MVP with 5–8 screens typically takes 4–8 weeks. More complex apps with backend integrations are 10–16 weeks. We set a fixed timeline in the project proposal.

Can you build the backend too?

Yes. We commonly build a Node.js / Next.js API or connect to Supabase, Firebase, or your existing REST/GraphQL API.

What about App Store approval?

We handle the submission process for both stores and have a strong track record of first-pass approvals. We fix any rejection issues at no extra cost.

What does mobile app development cost?

A focused MVP starts at $2,499 (one-time, fixed price). Larger apps with custom backends are quoted individually. Book a free call for an accurate estimate.

Get in touch

Let's Build Together

Have a project in mind? Tell us about your goals and we'll respond within 24 hours with a clear proposal.

Email
contact@gyb.digital
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US, Canada, UK, DE, FR, NL
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