Premium feel
Smooth, native-quality apps people enjoy opening every day.
Service 02 of 15
Mobile app development
iOS and Android apps, native or cross-platform, that people keep using.
- Typical timeline
- 10–20 weeks
- Pricing
- Fixed quote
- Team
- Designer + 2 mobile engineers
Our 3 promises
Your app. Our goal.
Three promises we make on every app we ship.
Top of the store
Store-ready builds, great reviews in mind, approved first time.
Built to last
One clean codebase that is easy to update as your users grow.
Tech stack
The stack behind your mobile app development
Proven, well-supported tools at every layer. Picked for your product, never for our habits.
- AppSwift
- AppMost requestedReact Native
- AppKotlin
- AppMost requestedFlutter
- BackendFirebase
- BackendGraphQL
- BackendMost requestedNode.js
- DataSQLite
- DataMost requestedPostgreSQL
- DataRealm
- ReleaseGoogle Play
- ReleaseMost requestedApp Store
- ReleaseExpo EAS
- QualityMost requestedDetox
- QualityCrashlytics
- QualityTestFlight
What’s included
What you get
Everything in scope, from first workshop to launch.
01StartApp strategy
Define the core use case, platforms and launch scope.
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App strategy is a 1–2 week discovery phase that defines what your app must do, who it is for and which platforms to launch on. We look at your users, the phones they use and how they will find the app. You receive a product brief and a fixed, itemised quote before any design or code starts.
What you get
- Product brief with users, goals and core use case
- Key user journeys mapped from first open to repeat use
- Recommendation on iOS, Android or both, with reasons
- Prioritised feature list for launch and later releases
- Fixed, itemised quote and delivery timeline
How it works
- Workshop with your team on goals and target users
- Review user research, competitors and device data
- Agree platforms and launch scope
- Present the brief and fixed quote for approval
Good to know: If you have website analytics, share them, as they show which phones and operating systems your customers already use.
02DesignApp design
Native-feeling designs for iOS and Android.
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App design produces clickable Figma prototypes that follow Apple and Google design patterns, so the app feels familiar on each platform. You can try the prototype on your own phone before development begins. Design usually takes 2–4 weeks and every screen is approved before it is built.
What you get
- Wireframes for every key screen and state
- Visual design in your brand colours and type
- Clickable prototype you can test on your phone
- iOS and Android variations where the platforms differ
- Design system of reusable components and icons
- App icon and store screenshot designs
How it works
- Wireframe the main journeys and agree the structure
- Apply visual style for iOS and Android
- Test the prototype with you and sample users
- Refine and sign off before development
Good to know: Testing the prototype with five or so real users usually reveals the most confusing screens before they cost money to build.
03BuildApp build
React Native, Flutter or fully native, chosen for your needs.
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The app build is where your app is developed in React Native, Flutter or fully native Swift and Kotlin, chosen to suit your features and budget. Work runs in two-week sprints, and you get a test build on your own phone at the end of each one. Offline support is built in where users need the app without signal.
What you get
- iOS and Android apps from the approved designs
- Test builds through TestFlight and Google Play testing tracks
- Offline mode with data that syncs when back online
- Automated tests for core journeys, using tools like Detox
- Testing on a range of real iPhones and Android phones
- Source code in a repository you own
How it works
- Set up the project, build pipeline and test devices
- Build features sprint by sprint from the approved designs
- Send a test build to your phone every two weeks
- Fix feedback and test on real devices before release
Good to know: Cross-platform suits most business apps, while heavy use of camera, Bluetooth or graphics can favour fully native code.
04BuildBackend & push
APIs, accounts, payments and notifications.
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The backend gives your app accounts, data storage, payments and push notifications, built with Node.js, Firebase or PostgreSQL. It is developed alongside the app in the same two-week sprints. Notifications and payments are tested end to end on real devices before launch.
What you get
- Secure API that the app talks to
- User sign-up, login and password reset
- In-app payments or subscriptions, set up to store rules
- Push notifications for iOS and Android
- Admin panel to manage users and content
- Automated tests for accounts, payments and notifications
How it works
- Design the data model and API from the agreed features
- Build accounts, permissions and core data
- Connect payments and push notification services
- Test every flow end to end on real phones
Good to know: Apple and Google have strict rules on in-app payments for digital goods, so we check your payment model against them early.
05LaunchStore release
App Store and Google Play submission and approval.
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Store release covers preparing and submitting your app to the App Store and Google Play, and handling any review questions until it is approved. Review usually takes from one day to a week per store. The developer accounts are in your name, so you own the app listings from day one.
What you get
- App Store and Google Play listings with text and screenshots
- Privacy labels and data safety forms completed
- Submission and replies to store reviewer questions
- Crash reporting with Crashlytics or similar
- Release builds signed and stored in your accounts
- Short guide to publishing future updates
How it works
- Help you set up Apple and Google developer accounts
- Prepare listings, screenshots and privacy details
- Submit builds and respond to reviewer feedback
- Monitor crashes and reviews after release
Good to know: Apple developer account approval for a company can take a couple of weeks, so start it during design, not at launch.
How it works
From idea to launch
Every service runs through the same five steps. Here is what each one means for Mobile app development.
01of 05
UnderstandWeeks 1–2Once
Workshops to map your users, key journeys and which phones they use.
You getProduct brief
What we do
- Kick-off workshop with your team
- Map user journeys and app store goals
- Agree the smallest version worth launching
You get
- Product brief
- User journeys
- Priority feature list
From you
- 2–3 hours for workshops
- Access to any existing app or data
Tools
- FigJam
- Notion
02of 05
PlanBefore any codeOnce
Screens, platform choice and a fixed quote you approve.
You getFixed quote & timeline
What we do
- Wireframes for key screens
- Native or cross-platform decision
- Sprint plan and release milestones
You get
- Fixed, itemised quote
- Timeline with milestones
- App architecture overview
From you
- Review and approve the plan
- Apple and Google developer accounts
Tools
- Figma
- Jira
03of 05
BuildTwo-week sprints↻ Repeats
App design and development with a test build on your phone every sprint.
You getTest build every sprint
What we do
- UI design for iOS and Android
- APIs, logins, payments and push notifications
- Code review and automated tests on every change
You get
- A test build on your phone every two weeks
- Shared sprint board
- Access to your code repository
From you
- 30-minute demo every two weeks
- Feedback within 3 working days
Tools
- React Native
- Expo
- GitHub
04of 05
Test & launchEach release↻ Repeats
Testing on real devices, then App Store and Google Play submission.
You getLive in the stores
What we do
- Testing on real iPhones and Android phones
- Performance, crash and security checks
- Store listings, screenshots and submission
You get
- Live app in both stores
- Test and crash report
- Handover documents
From you
- Beta testing with your users
- Go-live sign-off
Tools
- TestFlight
- Firebase
- Sentry
05of 05
Support & growAfter launch↻ Repeats
OS updates, fixes and new features as your users grow.
You getOngoing improvements
What we do
- Updates for new iOS and Android versions
- New features from user feedback
- Monthly review of ratings and usage
You get
- Monthly update
- Crash and store rating reports
From you
- Monthly 30-minute review
Tools
- Sentry
- Firebase Analytics
FAQ
Mobile app development questions
How much does it cost to build an app in the UK?
UK agency estimates range from about £8,000 for simple apps to £100,000+ for complex ones. We give a fixed quote once the scope is agreed.
How long does app development take?
Most of our apps launch in 10–20 weeks, including App Store and Google Play review. A focused first version can be quicker.
Native or cross-platform?
For most business apps we use React Native or Flutter: one codebase for iOS and Android at lower cost. We recommend native Swift or Kotlin when performance or device features need it.
Will you publish the app to the stores?
Yes. We handle submission and review using developer accounts in your name, so you keep control of the listing.
What does it cost to maintain an app?
Plan for operating system updates, fixes and hosting. Our monthly support plans keep the app compatible with each new iOS and Android release.
Can you build an MVP first?
Yes. We often start with a minimum viable product covering the core journey, test it with real users, then add features in later sprints.
Who owns the code?
You do. All IP is assigned to you in the contract, and the code, accounts and documentation are yours from the first sprint.
Let’s talk
Let’s talk
A 30-minute call with an engineer and a clear next step for your project.