Service details
Mobile App Development
We build native and cross-platform mobile applications for iOS and Android that users actually enjoy. From MVP validation to full-featured consumer apps and enterprise tools, we cover the entire product lifecycle.
Our mobile team combines strong engineering with UX sensibility — because beautiful code that ships a poor experience is a failed product.
What’s included
- iOS (Swift/SwiftUI) and Android (Kotlin/Jetpack Compose) native development
- Cross-platform development with React Native or Flutter
- UI/UX design and prototyping
- Backend API integration and offline-first architecture
- Push notifications, analytics, and in-app purchases
- App Store & Google Play submission and compliance
- Post-launch monitoring and iteration

Use cases
- Launch a consumer app from zero to App Store in 8–12 weeks
- Add a mobile companion to an existing web platform
- Build enterprise tools for field teams with offline capability
- Create health & fitness or fintech apps with strict compliance requirements
- Modernize a legacy mobile app with updated UX and performance

Tech stack
- Swift, SwiftUI (iOS)
- Kotlin, Jetpack Compose (Android)
- React Native, Expo
- Flutter, Dart
- Firebase, Supabase, AWS Amplify
What our clients say
“Crossline built our mobile app from scratch — App Store approved on first submission.”
“Crossline delivered a polished, performant app that our users love. The attention to UX detail and the speed of delivery were both outstanding.”
Priya Sharma
Product Lead at Pulse Health
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