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Software Engineering

Mobile App Development iOS and Android, One Codebase

Mobile app development covers cross-platform iOS and Android applications in React Native and Flutter, including the store submission process that quietly derails first launches. We build offline behaviour, push notifications, in-app purchases, and the AI features that make an app worth opening a second time.

  • One codebase, both platforms
  • Store submission handled
  • A release pipeline your team can run
Discuss a Mobile AppAll Services

How it runs · 5 steps

  1. Decide cross-platform or native
  2. Design the offline story
  3. Build with platform behaviour
  4. Prepare for the stores early
  5. Hand over the pipeline

Built with

  • React Native
  • Flutter
  • Expo
  • Firebase
  • FastAPI
  • PostgreSQL
  • Push notifications
  • Offline sync

More in Software Engineering

Questions first?Talk to an engineer

Cross-platform is the right default — and we will say when it is not

One codebase for iOS and Android is the correct choice for most business applications, and we build platform-specific behaviour where users expect it rather than shipping an Android app wearing an iOS icon. Heavy real-time graphics, deep hardware access, or demanding background processing still justify native, and that decision belongs in discovery rather than in a change request three months in.

The states that break mobile apps are the ones that only appear on a bad network: a half-completed sync, a queued purchase, a push notification arriving for a logged-out user. We design those before the happy path is finished.

The Problem

What this usually fixes

  • An app that assumes connectivity

    It works in the office and fails on a train. Offline behaviour designed after launch means rewriting the data layer.

  • Store rejection nobody planned for

    Privacy declarations, purchase rules, and review feedback arrive at the end of the project and add weeks nobody budgeted.

  • A release process only one person can run

    Certificates, provisioning, and store credentials live in one head, and shipping a fix depends on that person being available.

  • Installed once, never reopened

    Nothing in the app earns a second session, so acquisition spend buys downloads rather than users.

How We Work

The process

Each step produces something you can review — a document, an environment, or working software — rather than a percentage in a status report.

  1. Decide cross-platform or native

    Against your actual requirements for graphics, hardware access, and background work — settled in discovery, not later.

  2. Design the offline story

    What is cached, what queues, what reconciles, and what the user sees while it happens — before the happy path is built.

  3. Build with platform behaviour

    One codebase, with navigation, gestures, and notifications behaving the way each platform's users expect.

  4. Prepare for the stores early

    Privacy declarations, purchase configuration, and review requirements handled during the build rather than after it.

  5. Hand over the pipeline

    Automated builds and a release process your team can run without us, including credential ownership.

What You Get

Why teams choose this

  • Two platforms, one team

    A single codebase means a feature ships to iOS and Android together rather than one lagging a release behind.

  • Works on a bad network

    Offline and sync behaviour designed up front, which is what separates an app people trust from one they abandon on a commute.

  • A launch that lands on schedule

    Store requirements handled during the build, so review is a step rather than an unplanned extra sprint.

  • Releases you control

    Your team owns the credentials and can ship a fix without waiting for us to be available.

Stack

Technologies we build with

Tools we have delivered production work on, not a capability matrix. We pick per project and will explain the trade-off behind each choice.

Cross-platform
  • React Native
  • Flutter
  • Expo
Backend
  • Firebase
  • FastAPI
  • PostgreSQL
Device
  • Push notifications
  • Offline sync
  • Biometrics
  • Camera
Release
  • App Store Connect
  • Play Console
  • EAS
Industries

Who this is for

Mobile earns its cost where usage is frequent, on the move, or tied to something physical.

  • Logistics & field service
  • Healthcare
  • Fintech
  • E-commerce & retail
  • Education
  • Real estate
  • Hospitality
  • Manufacturing
Questions

Mobile App Development: common questions

Related reading

React Native or Flutter — which should we choose?

React Native fits teams that already write TypeScript and React, because the same engineers and much of the same tooling carry over, and the library ecosystem is broader. Flutter gives more consistent rendering across platforms and better performance for animation-heavy interfaces, at the cost of Dart being a separate skill to hire for. For most business applications either will work, and the deciding factor is usually your existing team rather than the framework.

When do we actually need a native app instead?

Three cases justify native: sustained high-performance graphics such as games or real-time video processing, deep or unusual hardware integration, and demanding background processing that platform frameworks constrain. Outside those, cross-platform delivers the same user experience for meaningfully less cost and one codebase to maintain. We make this call during discovery, because discovering it mid-build converts a feature request into a rewrite.

Do you handle App Store and Play Store submission?

Yes — account setup, privacy declarations, data-safety disclosures, in-app purchase configuration, screenshots and metadata, and handling review rejections when they come. Rejections are routine rather than exceptional, and knowing which ones are quick fixes versus genuine policy problems is most of the value. We also hand over the release pipeline and credentials so your team can ship updates without depending on us.

How long does a mobile app take to build?

A focused first release with authentication, one core workflow, and offline support typically takes twelve to twenty weeks including store submission. The variables that move it most are the number of backend integrations, whether payments are in-app or external, and how much of the design system already exists. Store review adds days rather than weeks once the submission requirements are handled during the build rather than after it.
Sectors

Where we apply this

The same work looks different depending on the constraints it has to hold. These cover what changes.

Related

Services that pair with this

What will people open it for on day thirty?

That question shapes the build more than the feature list does. Tell us the answer and we will scope the release around it.

Discuss a Mobile AppSee Our Work