Byteet
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Mobile App Development

Mobile App Development

Apps for iOS and Android, from first prototype to store release and beyond
  • Native-feeling apps for iOS and Android
  • Cross-platform builds with React Native or Flutter, or native Swift and Kotlin where needed
  • Backend, API and admin panel built alongside the app
  • App Store and Google Play publishing and ongoing updates
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Challenge

An App Idea Without a Clear Route to the Store

A customer app or field-staff app often stalls between idea and release: two platforms to support, a backend nobody planned for, store review to get through, and no one lined up to keep it working after the next iOS or Android update.

  • Unclear whether to build native or cross-platform
  • No backend or API for the app to talk to
  • Store submission, signing and privacy declarations left until the end
  • Apps that break after operating system updates because nobody maintains them

Approach

One Team From Prototype to Store and Updates

We scope the app around the tasks your users actually do, pick the platform approach that fits, build the app and its backend together, take it through store review and keep it current afterwards.

  • A platform choice explained and agreed before building starts
  • App and backend designed as one system
  • Store release prepared from the first sprint, not the last week
  • A maintenance plan for OS updates, libraries and bug fixes

Mobile App Development

Core Capabilities

What this service covers.

  • iOS & Android Apps

    Apps that look and behave the way users expect on each platform, built cross-platform with React Native or Flutter, or natively in Swift and Kotlin when the app needs deep access to the device.

    • Cross-platform development with React Native or Flutter
    • Native iOS (Swift) and Android (Kotlin) development
    • Offline use, camera, location and push notifications
    • Accessible interfaces for phones and tablets

  • Backend & API

    The server side the app depends on: APIs, user accounts, databases and an admin panel for your team, or a connection to systems you already run. Personal data is handled with the GDPR in mind.

    • REST or GraphQL API development
    • Authentication and user management
    • Admin panel for content and users
    • Integration with existing business systems

  • App Store & Google Play Publishing

    We prepare and submit the release: developer accounts, signing, store listings and the privacy and permission information both stores ask for.

    • Developer account and signing setup
    • Store listings, screenshots and descriptions
    • Privacy and permission declarations
    • Test releases via TestFlight and Google Play testing tracks

  • Maintenance & Updates

    Apps need regular work to keep running on new iOS and Android versions. We handle updates, monitoring and new features after launch.

    • Updates for new operating system versions
    • Dependency and security updates
    • Crash reporting and monitoring
    • Planned feature releases

Tools we work with

Mobile Technology

Frameworks and languages we use to build and run mobile apps.

React Native
Cross-Platform Framework
Flutter
Cross-Platform Framework
Swift
Native iOS
Kotlin
Native Android
Node.js
Backend & API
Firebase
Push Notifications & Auth

Project timeline

App Development Process

From a scoped idea to a published app, in short iterations with test builds you can install on your own phone.

  1. Discovery & Prototype

    2-3 weeks

    Define users, core tasks and platform approach, and test the main flows in a clickable prototype.

    Deliverables

    • Feature scope and user flows
    • Native or cross-platform recommendation
    • Clickable prototype
    • Technical architecture

  2. Development & Testing

    6-12 weeks

    Build the app and backend in short iterations, with a test build on real devices after each one.

    Deliverables

    • iOS and Android app builds
    • Backend and API
    • Test builds via TestFlight and Google Play testing
    • Automated and on-device testing

  3. Store Release

    1-2 weeks

    Prepare listings, privacy information and release builds, and take the app through App Store and Google Play review.

    Deliverables

    • Store listings and screenshots
    • Privacy and permission declarations
    • Signed release builds
    • Crash reporting setup

  4. Maintenance & Updates

    Ongoing

    Keep the app working on new OS versions and ship improvements in planned releases.

    Deliverables

    • OS and dependency updates
    • Bug fixes and monitoring
    • Feature releases
    • Store listing updates

Business Impact

Business Impact

What a well-built, maintained app gives your business.

  • One Codebase, Two Platforms

    With a cross-platform approach, iOS and Android share most of the code, so new features reach both at the same time.

  • Source Code You Own

    You receive the source code of the app and the backend, so you are not tied to one supplier.

  • Fewer Surprises at Release

    Store requirements are handled during development, so review issues come up early.

  • Kept Up to Date

    Regular maintenance keeps the app working as iOS and Android change.