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NineOneNine
Raleigh, NC35.78°N · 78.64°W

Mobile apps,native where it counts.

iOS and Android apps engineered for performance and the long tail of post-launch updates — built by a studio that ships to both app stores.

Mobile App Development in Raleigh, North Carolina by NineOneNine

Overview

What we do.

We build iOS and Android applications — native when the platform demands it, React Native when shared code makes sense. From mobile-first startups to companion apps for existing platforms, we handle design, development, app store submission, and the long tail of post-launch updates.

Mobile is its own discipline. Offline-first data handling, push notifications, background tasks, app store review cycles, and the differences between iOS and Android user expectations all matter. Based in Raleigh, we work with founders and product teams across the Triangle who need apps that feel genuinely native — not web pages wrapped in a shell.

Deliverables

What's included.

Every mobile app development engagement covers the full lifecycle — design, build, deploy, and the long tail after launch.

  • Native iOS development with Swift and SwiftUI
  • Native Android development with Kotlin and Jetpack Compose
  • React Native for shared-codebase apps
  • Offline-first data sync and caching
  • Push notifications and deep linking
  • In-app purchases and subscription billing
  • App Store and Google Play submission
  • TestFlight and internal track distribution
  • Crash reporting, analytics, and performance monitoring
  • Post-launch updates and OS migration support

Stack

Tech we use.

We pick tools based on what fits your problem — not what's trending. These are the ones we reach for most.

  • Swift
  • SwiftUI
  • Kotlin
  • Jetpack Compose
  • React Native
  • Expo
  • Firebase
  • Supabase
  • RevenueCat

FAQ

Common
questions.

Should we go native or use React Native?
It depends on the app. If you need deep platform integration, high-frame-rate animation, or hardware access, native is usually the right call. If your app is primarily forms, lists, and content, React Native lets us ship to both platforms from one codebase — at a meaningful cost savings.
Do you handle App Store and Google Play submissions?
Yes. We manage the entire submission process — provisioning, certificates, store listings, screenshots, and review responses. If a build gets rejected, we handle the back-and-forth.
Can you build a mobile app on top of our existing backend?
Yes. If you already have a REST or GraphQL API, we can build the mobile client against it. If your existing backend needs adjustments for mobile use cases — offline sync, push, auth — we can handle those changes too.
What about ongoing updates after launch?
Mobile platforms change frequently — new iOS versions, new Android SDK requirements, deprecated APIs. We offer maintenance retainers to keep your app current and on the store, so it doesn't quietly break six months after launch.

Ready to start?

Let's build your
mobile app development.

Tell us about your project and we'll get back to you within one business day with next steps.