Flutter app development
Flutter app development for iPhone, Android and the web
We design and build cross-platform apps with Flutter, so you launch on iOS, Android, web and desktop from one codebase, faster and at a lower cost than building each app separately.
★★★★★Google reviewsSince 20153,400+ projectsBirmingham, UK
Flutter
Overview
One codebase, every platform
Building separate iPhone and Android apps used to mean two teams, two codebases and twice the cost. Flutter, Google's open-source framework, changed that. Apps are written once in Dart and compiled to native code for iOS, Android, web and desktop, with smooth animations and a consistent design on every device.
Our Flutter app development team builds that way every day. Our own product, UptrendPOS, is a Flutter application used by real shops to sell, manage stock and keep accounts, online and offline, on Android, Windows and the web. We bring the lessons from running a live product, such as offline sync, secure data and careful releases, to every client app.
We handle the whole journey: product discovery, UX and interface design, development, testing on real devices, App Store and Google Play submission, and ongoing updates once your app is in customers' hands.
What's included
Everything you need to launch an app
Product discovery
We define your users, core features and the smallest first release that proves the idea.
UX and UI design
Clickable prototypes and polished screens that follow Apple and Google design guidelines.
Flutter development
Clean, tested Dart code with state management and architecture that scales.
Offline-first and sync
Apps that keep working without signal and sync safely when the connection returns.
Secure back end
Authentication, databases, push notifications and payments using Firebase, Supabase or your API.
Store launch and updates
App Store and Google Play listings, review submission and a plan for regular updates.
Our process
From idea to App Store
01
Discovery
Users, goals, features and integrations, ending with a prioritised feature list and estimate.
02
Design and prototype
User flows and clickable screens tested with real people before development.
03
Development sprints
Fortnightly builds you can install on your own phone through TestFlight and Google Play testing.
04
Testing and store submission
Device testing, performance checks and submission to Apple and Google.
05
Launch and iterate
We monitor crashes and feedback, then plan the next release with you.
Recent work
Websites we have designed and built
Reviews
What our clients say
“They developed two projects for me professionally, delivered quality work on time, communicated well throughout the process, and exceeded my expectations.”
“Their team is highly professional, responsive, and delivers high-quality work on time. They helped me with website development and digital services, and the results exceeded my expectations.”
“He is very responsive, professional, and great at communicating.”
FAQs
Flutter app development: your questions answered
Why use Flutter rather than native apps?
Flutter lets one team build for iOS, Android, web and desktop from a single codebase, which usually means a faster launch and lower costs. Performance is close to native for the vast majority of business apps.
How long does it take to build an app?
A focused first release usually takes eight to sixteen weeks, depending on features and integrations. We recommend launching a smaller version first and adding features based on real feedback.
Will you publish the app to the App Store and Google Play?
Yes. We prepare your store listings, screenshots and privacy details, and handle the submission and review process with Apple and Google under your own developer accounts.
Can the app work offline?
Yes. We have built offline-first apps, including our own UptrendPOS, that store data on the device and sync securely when the connection returns.
Do I own the source code?
Yes. The code, designs and store accounts belong to you, and you receive full access at handover.
Can you add an app to our existing website or system?
Yes. We can connect your app to an existing WordPress or Shopify site, or to your own API, so customers see the same products, bookings or account details everywhere.
Why Flutter
Flutter app development compared with native apps
Businesses planning an app usually choose between separate native apps and a cross-platform approach. Here is how Flutter app development compares in practice.
Cost and speed
With native development, iPhone and Android apps are written twice, in Swift and Kotlin. Flutter app development uses one codebase in Dart, so features are built once and shipped to every platform. For most business apps this shortens timelines and reduces cost.
Look and feel
Flutter draws its own interface, so your app looks consistent on every device while still following platform conventions such as navigation gestures and accessibility settings.
Performance
Flutter compiles to native code, so scrolling, animations and screen transitions are smooth. Only very specialised apps, such as advanced 3D games, usually need fully native development.
Long-term support
Flutter is open source and backed by Google, with a large community and regular releases. The official Flutter documentation is extensive, so any experienced developer can maintain your app in future.
Our experience
Our own product, UptrendPOS, is built with Flutter and runs on Android, Windows and the web, including offline sales that sync later. That real-world experience shapes every Flutter app we build for clients, from the first prototype to App Store and Google Play releases.
If you are comparing quotes, ask each team how much of the code will be shared between platforms. With Flutter app development the answer is usually almost all of it, which is where most of the time and cost savings come from. Our Flutter app development projects also include automated tests, so new features do not break existing ones.
Free consultation
Thinking about building an app?
A free, no-obligation conversation with the people who will do the work. You get honest advice, a clear written quote and a realistic timeline.