Verified client
“ExprtAI delivered a production AI system in weeks, not quarters.”
Sarah Chen
CTO · Nova
Mobile App Development
React Native first for speed and one codebase, native Swift or Kotlin when a feature demands it. Built on real devices, tested weekly and taken all the way through store review.
iOS + Android
From one codebase
Weekly
Builds on real devices
Both stores
Submission and review handled
100%
Code and store accounts owned by you
- Reply within one business day
- NDA on request
- Senior partner on every call
- 100% IP ownership
- No-obligation estimate
What we build
Every kind of mobile experience, engineered to perform
Cross-platform
Cross-platform apps (React Native)
One codebase, two stores. React Native apps that feel native on both iOS and Android, with over-the-air updates for fast fixes.
- Single codebase
- Native gestures and animations
- Platform-specific UI
- OTA updates
iOS
iOS app development
Swift and SwiftUI apps with fluid animation, deep system integration and App Store submission support.
- Swift and SwiftUI
- Sign in with Apple
- In-app purchases
- TestFlight distribution
Android
Android app development
Kotlin and Jetpack Compose apps built to Material Design standards with full Play Store launch support.
- Kotlin and Jetpack Compose
- Google Pay integration
- Play Store launch
- Firebase messaging
Offline
Offline-first apps
Apps that keep working without a connection and reconcile data safely the moment connectivity returns.
- Local SQLite storage
- Background sync
- Conflict resolution
- Optimistic UI
Engagement
Push notifications and messaging
Targeted push, in-app messaging and real-time chat with deep links and analytics on what actually re-engages users.
- Firebase Cloud Messaging
- Deep links
- In-app chat
- Notification analytics
Hardware
Device integration and IoT
Camera, GPS, biometrics, Bluetooth and NFC integrations for apps that talk to the physical world.
- Camera and AR
- GPS and geofencing
- Face ID and Touch ID
- BLE and NFC
AI / ML
AI-powered mobile features
On-device inference and cloud AI, from voice commands to real-time image recognition and personalised feeds.
- On-device inference
- Voice and NLP
- Image recognition
- Personalised feeds
Migration
App modernisation and migration
Move legacy native or hybrid apps to a modern React Native architecture without losing your existing users or data.
- Brownfield migration
- Performance audit
- UI refresh
- CI/CD pipeline
Our process
From idea to app store
01
Discovery and UX
Define user journeys, flows and the smallest feature set worth launching.
02
Design
Native-feel UI prototypes that follow platform conventions before the build begins.
03
Build and QA
Iterative sprints on real devices with crash monitoring and weekly builds you can install.
04
Store launch
App Store and Play Store submission, review support and post-launch monitoring.
Tech stack
Tools we run in production
Proven, well-supported technology chosen for your requirements, never for novelty.
ReactReact Native
Expo
TypeScriptSwift
Kotlin
Firebase
Supabase
Xcode
Android Studio
App Store
Google PlayClient outcomes
What it is like to work with us
Feedback from founders, CTOs and product leads who shipped with ExprtAI.
Verified client
“From discovery to launch, they felt like an extension of our team.”
Marcus Webb
Founder · Helix Care
Verified client
“Beautiful UX, rock-solid backend, and clear communication.”
Elena Ruiz
VP Product · Orbit
As featured in
Related work
Case studies from similar engagements
FAQ
Questions about mobile app development
Straight answers to what clients ask before an engagement starts. Anything else, we are happy to walk through on a call.
Ask us directlyLet's build your app
From first screen to app store, we handle everything. Most projects kick off within one to two weeks.