Mobile app development
iOS and Android apps, native or cross-platform, released through the App Store and Google Play.
Hi Sam
Next appointment
Tue 13 · 10:30 · Dr Okafor
What we build
Apps we build
We design, build and release iOS and Android apps, native or cross-platformOne codebase that builds apps for both iOS and Android, such as React Native or Flutter., and keep them current after launch.
Customer apps
Accounts, ordering, bookings and loyalty, with push notificationsMessages sent to a user's device through Apple's and Google's notification services, even when the app is closed. and secure sign-in.
Field and workforce apps
Offline-capable apps for inspections, deliveries and service visits, with photo and signature capture.
Companion apps
Apps that pair with devices over Bluetooth or connect to wearables and health data.
Internal apps
Employee apps distributed privately through mobile device management.
App modernization
An ageing app rebuilt on a current framework without losing users or data.
How to get started
Three steps to a plan for mobile app development
- 1Tell us what you needUse the project form or book a call. A few sentences about the goal is enough to start.
- 2Free technical consultationWe go through your goals, users, existing systems and constraints with you.
- 3Your planA detailed plan covering the right tech stack, architecture, timeline and budget. Then you decide.
How it works
The same button, four frameworks
We build natively in SwiftUI and Jetpack Compose, or cross-platform in React Native and Flutter. Switch to compare the code and how much is shared.
1Button("Book appointment") {2 viewModel.book(slot)3}4.buttonStyle(.borderedProminent)5.accessibilityHint("Books the selected time")
Language: Swift
iOS only; Android is written separately in Kotlin.
From build to store
Builds move through testing tracks before reaching everyone. Promote build 214 on iOS or Android.
- TestFlight: internalbuild 214
- TestFlight: external
- App Review
- App Store
Up to 100 members of your App Store Connect team, available minutes after upload.
Each track widens the audience only once the last one looks healthy.
Services
Mobile app development services
Take one on its own, or combine them in one engagement with one team.
iOS and Android development
Native apps in Swift and Kotlin, for the fullest use of each platform.
Cross-platform development
React Native or Flutter apps, one codebase for both stores.
Backend and API development
Accounts, data and notifications built for the app, or connected to your existing systems.
Release and app maintenance
Store submissions, staged rolloutsReleasing an update to a growing percentage of users, so problems affect only a few before being caught., crash monitoring and updates for new OS versions.
Our approach
How the work runs
Each stage hands its output to the next, like the stages of a delivery pipeline.
- Stage 1
Platform decision
Native, cross-platform or a progressive web app, based on features, team and budget.
- Stage 2
Design
Designs that follow Apple's Human Interface Guidelines and Google's Material Design.
- Stage 3
Build and test
Sprints with automated tests and builds shared through TestFlightApple's service for sending beta builds to testers before App Store release. and Play Console testing tracks.
- Stage 4
Store release
Store listings, privacy labels, review submission and a staged rollout.
- Stage 5
Improve
Crash reporting, analytics and regular updates for new OS versions.
What we'll need from you
Having these ready keeps the work moving.
Developer accounts
Apple Developer Program and Google Play Console accounts in your name.
API and backend access
Documentation and test accounts for the systems the app uses.
Test users
People to try beta builds through TestFlight and Play testing tracks.
Brand assets
Logos, colours and any existing design system.
Who's on the project
Our team, working with product owner from yours.
- booking-app
Mobile tech lead · our team
Owns the platform decision, architecture and releases.
Deliverables
What you receive
Everything is handed over in your name: code, accounts and documentation.
What the documentation looks like
Every project ends with documents your team can run with. Here is an excerpt of one of them.
Release 2.4: device coverage
Real devices and simulators · smoke and regression
| Device | OS | Smoke | Regression |
|---|---|---|---|
| iPhone 15 | iOS 18 | Pass | Pass |
| iPhone SE (3rd gen) | iOS 17 | Pass | Pass |
| Pixel 8 | Android 15 | Pass | Pass |
| Samsung Galaxy A54 | Android 14 | Pass | 1 issue |
Galaxy A54: date picker overlaps the keyboard. Fixed in build 2.4.1 before rollout.
Measuring success
How success is measured
What we report on in mobile app development projects. Which measures apply, and their targets, are agreed with you at the start.
App health
Releasing in stages
Choose the store, move through the rollout and change the crash-free rate to see when a release should pause.
Continue the rollout
5% on the new version
Crash-free sessions are above the threshold, so the release moves to the next step.
Crash reporting from Firebase Crashlytics or Sentry feeds the decision at each step.
Readiness check
Are you ready for
mobile app development?
Five questions, about a minute. You'll see what to settle first and a sensible starting point.
? Do you know which journeys users will repeat on a phone? (y / n / ?)
How to start
From first call to production
Start where you are. Each step ends with a decision, so you commit to the next one only when it makes sense.
git show v0.1
Free technical consultation
Talk through the goal, the users, the systems involved and any deadlines.
- + A clear view of scope and priorities
- + A recommended next step
- + A plan covering stack, architecture, timeline and budget
Estimate the value
What it could be worth to you
Enter your own figures. The formula is shown, and the estimate can go with your enquiry.
# Calls and emails moved to the app
# formula: Contacts × share moved to the app × cost per contact
Build or buy
When you don't need
a custom build
Part of the free technical consultation: when an existing product covers the need, we recommend it instead of a custom build. These are the options we weigh, alongside the tools you already have.
A native app fits when
- Users return often and expect a native experience
- The app needs offline use, camera, location or Bluetooth
- Your brand and journeys don't fit a template
- The app is a product in its own right
Tap the two icons on the phone.
Technologies and standards
Chosen for your project
Native and cross-platform frameworks compared. Choose a column to highlight it.
| Language | Swift and Kotlin | TypeScript | Dart | Kotlin |
| UI | Platform UI kits | Native components | Its own rendering engine | Native UI, or Compose Multiplatform |
| Shared code | None | Most | Most | Business logic, optionally UI |
| Native APIs | Immediate | Through modules | Through plugins | Direct |
| Fits | Best-in-class platform feel | Teams strong in React | Custom, branded UI | Native teams sharing logic |
Our technology radar for mobile app development
techniques / adopt
Feature flags
Separate deploying code from releasing it, so unfinished work can ship dark and be switched on gradually.
Our default. We use it on client projects unless there's a reason not to.
Our recommendations. Updated September 2026.
Native
- Swift
- SwiftUI
- Kotlin
- Jetpack Compose
Cross-platform
- React Native
- Expo
- Flutter
- Kotlin Multiplatform
Release and quality
- Fastlane
- TestFlight
- Google Play Console
- Firebase Crashlytics
- Sentry
Guidelines
- Apple Human Interface Guidelines
- Material Design
- OWASP MASVS
In your industry
Where it applies
What this work delivers in the industries we serve.
Questions
Common questions
about mobile app development
Do you build native or cross-platform?
Both. We use React Native or Flutter for most business apps, sharing most code, and Swift and Kotlin for apps that need the latest platform features, heavy graphics or deep device integration.
Do you handle App Store and Google Play review?
Yes. We prepare the listings and privacy labels, submit each release, plan around review times and use staged rollouts so an issue affects only a small share of users.
Do you build the backend too?
Yes. We build the APIs for accounts, data and notifications, connect to your existing systems, or use managed services such as Firebase where they fit.
How is a project priced?
Well-defined scopes are delivered as fixed-price engagements; when requirements are still evolving, we provide a dedicated team instead. Either way, the free technical consultation ends with a plan covering tech stack, architecture, timeline and budget, so you know the cost before work starts.
More in Custom Software Development
How it connects
- Relies onAPI development & integrationApps depend on secure, well-designed APIs for data and sign-in.
- Pairs withQuality assuranceTesting across devices and OS versions before each store release.
- Pairs withSoftware developmentThe same backend can serve the app and a web version.
Planning mobile app development work?
Start with a free technical consultation: a detailed plan covering the right tech stack, architecture, timeline and budget for your project.
Start a project