Cross-platform apps
One Flutter or React Native codebase for iOS and Android.
iOS and Android apps people keep opening.
From first design to App Store launch, we build apps that feel fast and familiar on every phone, with the backend, payments and notifications they need.
Tap to swipe
From £18,000
Why it matters.
People delete apps that are slow, confusing or crash on their phone. Getting an app right means thinking about real devices, patchy signal, notifications people actually want and App Store rules, not just the screens.
We usually build with Flutter or React Native, so one codebase runs on both iOS and Android and you're not paying twice. When an app needs something only native code can do, we use Swift and Kotlin.
We handle the parts people forget: the backend and admin dashboard, push notifications, analytics, App Store and Google Play submission, and updates after launch.
What we do.
Everything you need, from the first design to launch and beyond.
Native iOS and Android
Swift and Kotlin when your app needs the full power of the device.
App Store launch
Store listings, screenshots, review and release handled for you.
Push notifications
Timely, useful notifications that bring people back rather than annoy them.
Maps and live tracking
Delivery tracking, store finders and location features that work on the move.
In-app payments
Apple Pay, Google Pay, cards and subscriptions, set up to store rules.
Admin dashboards
A web dashboard for your team to manage users, orders and content.
What you get.
The difference a senior team makes.
One codebase, two stores
Cross-platform apps cost less to build and less to keep updated.
Tested on real phones
Checked on the iPhones and Android devices your customers actually use.
Launch handled
We deal with App Store and Google Play review so you don't have to.
Measured after launch
Analytics and crash reporting show what people use and where they get stuck.
Tools we use.
Proven technology that will still be supported in five years.
- FlutterMobile
- React NativeMobile
- SwiftiOS
- KotlinAndroid
- FirebaseBackend
- Node.jsBackend
- StripePayments
How it runs.
Five steps, a fixed price and a demo every week.
Discovery
We agree who the app is for, the must-have features and which platforms to launch on. You get a fixed quote.
Typical length1 week
Your time2 to 3 hours
What you get
- Feature list
- Fixed quote and timeline
- Platform recommendation
Related work.
Recent mobile app development projects for London businesses.
Your project could be next.
Tell us what you're planning and get a fixed estimate within one working day.
Projects and pricing.
What clients most often build with us, and where prices start.
Typical projects
What clients most often ask us to build.
- Food ordering and delivery
- Bookings and appointments
- Loyalty and rewards
- Fitness and wellbeing
- Field service and staff apps
- Marketplaces
Starting price
from£18,000
A cross-platform app with its backend. Native builds are quoted after discovery.
Questions, answered.
Can't find what you need? We reply within two working hours.
hello@pixarbyte.co.ukor call +44 20 0000 0000
Should we choose native or cross-platform?
For most apps, cross-platform (Flutter or React Native) is faster and cheaper, with one codebase for both stores. We recommend native Swift and Kotlin when you need heavy use of the camera, Bluetooth, AR or background processing.
How long does it take to build an app?
Typically 8 to 14 weeks from discovery to launch, depending on features. We'll give you a fixed timeline with your quote.
Do you handle App Store and Google Play submission?
Yes. We prepare the listings, screenshots and privacy details, submit the app and deal with any review feedback.
Do we need a backend as well?
Almost every app does, for accounts, data, payments and notifications. It's included in our quotes, usually built with Node.js or Firebase.
What does an app cost to maintain?
Plan for updates each year as iOS and Android change. Our maintenance plans cover OS updates, fixes and small improvements after the 30 days of support included.
“They rebuilt our ordering in twelve weeks and it simply works.”
Ali RazaFounder, FoodGo
Ready to start your mobile app development project?
Tell us what you're planning. You'll get a clear estimate and a plan within one working day, free and with no obligation.
hello@pixarbyte.co.ukReplies within 2 working hours
+44 20 0000 0000Mon to Fri, 9am to 6pm
London, United KingdomMeetings by appointment