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Mobile App Development — USA

Mobile Apps Built to
App Store Standards.

iOS and Android app development for US startups — React Native for cross-platform efficiency, native when performance demands it, and always designed for the 5-star review.

Build My App View App Design

4.9?

Average App Store rating

50K+

Downloads on apps we built

10wks

Typical MVP delivery

iOS + Android

From a single codebase

What is Mobile App Development?

Mobile app development is the process of designing and engineering software applications that run natively or cross-platform on iOS and Android devices. It covers the full stack: UI/UX design, frontend code (React Native or Swift/Kotlin), backend APIs, push notifications, offline storage, and App Store submission. Mobile is now the primary computing platform for most users — 70% of digital media time is spent on smartphones — making a high-quality mobile app a critical growth channel for consumer and B2B products alike.

What We Build

Full-Stack Mobile App Development

React Native Development

Cross-platform apps that share 90%+ of code between iOS and Android — shipping faster without sacrificing native performance or feel.

Native iOS & Android

Platform-specific native development (Swift/SwiftUI for iOS, Kotlin for Android) when native APIs or performance requirements demand it.

Backend & API Development

Mobile-optimized APIs, real-time features (WebSockets), push notification infrastructure, and data sync architecture for offline-first apps.

App Store Submission

Complete App Store and Google Play submission — screenshots, descriptions, metadata, review compliance, and handling rejection responses.

Ongoing Maintenance

OS update compatibility, bug fixes, performance monitoring with Crashlytics, and feature releases — keeping your app healthy post-launch.

MVP to Production

From scoped MVP to full production app — we scale the codebase, design system, and infrastructure to match your growth.

Also see:Mobile App Design →MVP Development →

Ready to get started?

Free 30-minute call · No commitment · Same-week availability

Book a Free Consultation

FAQ

Frequently Asked Questions

Do you build iOS apps, Android apps, or both?+
Both. For most startups, we recommend React Native — it lets us build a single codebase that compiles to native iOS and Android, significantly reducing development cost and time while maintaining native-quality performance. For apps requiring deep platform-specific APIs (ARKit, widgets, Bluetooth hardware integration), we build natively in Swift or Kotlin.
What is React Native and is it as good as native?+
React Native is Facebook/Meta's framework for building cross-platform mobile apps using JavaScript/TypeScript. It renders to actual native UI components (not a webview), so the result looks and feels native on each platform. For the vast majority of app types, users can't tell the difference. Apps like Airbnb, Facebook, and Shopify use React Native in production.
How long does it take to build a mobile app?+
A focused MVP app (core feature set, authentication, basic profile) takes 8–14 weeks. A full consumer app with complex features, real-time functionality, and social elements takes 16–24 weeks. We always define the MVP scope clearly at the start to hit the fastest possible validated launch date.
Do you handle App Store submission?+
Yes, completely. We handle the Apple Developer and Google Play account setup (or use your existing accounts), prepare all required screenshots, write store listings, ensure compliance with both stores' review guidelines, submit, and handle any rejections or review questions.
Do you build the backend/API for the mobile app?+
Yes. Most apps need a backend — user authentication, data storage, push notifications, real-time features, and third-party integrations. We build the full stack: mobile app + backend API + database — so you have one team responsible for the complete system.
Can you add features to an existing mobile app?+
Yes. We regularly join projects mid-stream to add features, fix performance issues, or modernize legacy React Native codebases. We start with a code audit to understand the current architecture before writing any new code.
What does mobile app development cost?+
A React Native MVP app typically starts at $20,000–$40,000 depending on feature complexity. A full-featured consumer app with backend ranges from $40,000–$100,000+. Native-only builds cost more due to maintaining two separate codebases. We provide detailed fixed-price scoping after a discovery call.
How do you ensure quality before App Store submission?+
We conduct internal QA on real devices (not just simulators) across multiple OS versions, test all edge cases and error states, run performance profiling to catch memory leaks and slow renders, and do beta testing via TestFlight and Google Play Internal Testing before submission.

Let's work together

Ready to build your mobile app?

Book a free app scoping call. We'll define your MVP, estimate timeline and cost, and recommend the right tech approach for your use case.

Book a Free App Scoping CallRead our insights →