When the product lives in someone's pocket.
Some products only make sense on a phone: the camera, location, notifications or working offline on a site with no signal. We build cross-platform apps for iOS and Android from one codebase, and tell you honestly when a web app would do the job instead.
Ideal for
- Products that need the camera, GPS or offline mode
- Field teams working away from a desk
- Consumer ideas built on daily habits
What it does, and why it matters
Feature: One codebase, two platforms
iOS and Android ship together
Half the cost of building two native apps
Feature: Camera, location and offline
The app works where your users actually are
Field work gets captured once, correctly
Feature: On-device AI features
Photos, voice and documents understood in the moment
Tasks that took forms and follow-ups take seconds
Mobile Applications we build
Consumer applications
Habit, health, social or utility apps built around one repeatable moment.
Business apps
Inspections, deliveries, field sales and site reports for teams on the move.
Companion applications
The mobile side of your web product or connected device.
AI-powered utilities
Point the camera, speak or scan — and get something useful back.
What it usually costs
Mobile MVPs fit the 21-Day Launch, including TestFlight and Play testing builds and store submission support.
Building blocks we use
- React Native + Expo
- Offline storage and sync
- Push notifications
- Camera, maps and on-device ML
- TestFlight and Play Console
21-Day Launch
$3,700
For fuller products: several roles, AI agents that take actions, heavier integrations or a mobile MVP.
- Up to 5 core workflows
- Up to 20 screens
- Multiple roles & permissions
Your product gets its own written scope and fixed price before anything starts. Compare packages
Products we've built in this area
Built in-house by MVP Ninja Labs. Each concept build walks through the problem, the cut, the screens and the architecture.

Sitewalk
AI mobile app · property handovers
Walk a property, photograph defects, and let AI turn them into an assigned snag list before you reach the car.
What it’s like to work with Ali.
43 contracts · 100% Job SuccessUpwork review: Mobile app rebuild “Ali is a talented individual. Delivered above and beyond on this project.”
Upwork review: Mobile app repair “Ali and [t]eam quickly identified my problem and helped me get my app back up and running.”