Development · Mobile

Mobile app development for iOS and Android

We build mobile apps for customers and for teams in the field. Apps are cross-platform or native, work offline where needed and connect to your existing backend, ERP or CRM.

Book a free consultationHow it works ↓

What's included

What our mobile app development service covers

  • 01

    Product scoping

    Who uses the app, what it must do on day one and what can wait.

  • 02

    App design

    Native-feeling interfaces designed for small screens and one-handed use.

  • 03

    Cross-platform development

    One codebase for iOS and Android where it fits, native modules where it doesn't.

  • 04

    Offline & sync

    Apps that keep working without signal and sync safely when back online.

  • 05

    Backend & integrations

    APIs and connections to your existing systems, payments and notifications.

  • 06

    Store release & updates

    App Store and Google Play publishing, crash monitoring and regular updates.

When to bring us in

Signs it's time

  • 01Field staff still use paper or spreadsheets
  • 02Customers ask for an app to order or book
  • 03Your mobile website isn't enough for daily users
  • 04An existing app has poor reviews or crashes
  • 05Your app needs to connect to internal systems

Process

How it works

  1. 01

    Scope

    Users, features and platforms.

  2. 02

    Design

    Prototype tested on real devices.

  3. 03

    Build

    Iterative releases to testers.

  4. 04

    Release

    Store launch and ongoing updates.

Technologies we work with

  • React Native
  • Flutter
  • Swift
  • Kotlin
  • Expo
  • Firebase
  • Push notifications
  • SQLite

FAQ

Frequently asked questions

Native or cross-platform?

Cross-platform (React Native or Flutter) suits most business apps and saves cost. We recommend native only where performance or device features require it.

Can the app work offline?

Yes. We design offline-first apps for field teams, with safe sync and conflict handling.

Do you publish to the App Store and Google Play?

Yes, we handle store listings, review requirements and releases under your developer accounts.

Can you take over an existing app?

Yes. We start with a code and dependency review, then stabilise the app before adding features.

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Until 31 December 2026

Talk to an engineer about mobile app development

Your first two consultations are free. Tell us where you are now and where you want to be, and we'll give you an honest view of the options.

Book a free consultationhello@deverlin.com