Mobile apps
Mobile app development services for iOS and Android
New Flutter apps for iOS and Android, and fixes, updates and modernisation for apps you already have, connected to the systems that run your business.
What’s included
- New Flutter apps
- Fixing existing apps
- App modernisation
- API and back-end integration
Why it matters
An app is only as good as the system behind it
Our mobile app development services start with a simple question: what should people be able to do from their phone? Order again, book a slot, check stock, log a visit. The answer shapes every screen we design.
Most app problems aren’t on the phone at all. They come from a weak back-end, data that doesn’t match your admin system, or an app nobody can update.
That’s why we build the app and the API together, so both stay in step as your business changes.
A mobile app makes sense when
- Customers reorder or book regularly
- Staff work away from a desk
- Your web platform needs a phone companion
- Notifications would save follow-up calls
- Your current app is unstable or outdated
Mobile app development services we offer
One Flutter codebase for iOS and Android, built and supported by the same team as your back-end.
Cross-platform Flutter apps
One codebase for iOS and Android, so features reach both platforms together and there’s one app to maintain.
Customer and ordering apps
Catalogues, carts, reorders and account areas that connect straight to your stock and order management.
Staff and field apps
Apps for deliveries, stock checks, visits and approvals, giving teams on the move the data they need.
APIs and back-ends
The server side your app relies on: authentication, data, notifications and an admin panel to manage it all.
Custom software developmentCompanion apps for web platforms
A phone app that runs on your existing web platform’s data, so users switch devices without switching systems.
Web app developmentApp updates and modernisation
Rework an outdated or unreliable app with a cleaner interface, a stable API and features users actually ask for.
Existing apps
Fixing and taking over existing apps
Many projects start with an app that already exists: built by another team, not updated for a while, or failing after an operating system update. We start by reviewing the code, the back-end it talks to and how releases are published.
Then we fix what is urgent, stabilise the build and release process, and plan improvements in stages. If the app needs a new or better API, we build that too.
We build our own apps with Flutter. If your app is built another way, we’ll tell you honestly after the review whether we are the right team to maintain it.
How we take over an app
- Code and back-end review
- Urgent fixes first
- Stable builds and store releases
- Features added in stages
- API and back-end work included
How we build mobile apps
You see real screens early and test the app on your own phone well before launch.
- 1Discovery
Users, key journeys and data sources mapped, and the first release agreed.
- 2Design and prototype
Clickable screens designed for thumbs, tested with your team before any code.
- 3Build and test
App and API built in stages, with test builds on real devices.
- 4Release and support
App store submission, monitoring, fixes and new features after launch.
Mobile apps we’ve built
Sublime Groceria shows how we approach mobile: a focused app on a proven platform.
Our product · Flutter app on the SCC API
Sublime Groceria
A grocery app idea with no budget for its own back-end.
A Flutter grocery list app on the SCC API.
OutcomeUsers, lists and content are managed from the Sublime Care Cloud admin.
- Flutter
- .NET API
- SQL Server
Technology
Why we build mobile apps with Flutter
We build mobile apps with Flutter, Google’s framework for producing iOS and Android apps from one codebase. You get a consistent experience on both platforms, and every new feature is written once.
Behind the app we use the same stack as our business platforms: .NET and ASP.NET Core APIs with SQL Server, or PHP and Laravel with MySQL.
Good apps also need good interface design, which is why UI/UX design is part of every mobile project we take on.
What you get
- One codebase for iOS and Android
- An API and admin panel to match
- Screens designed around real user journeys
- Ongoing updates and support
Mobile app development services FAQs
What people usually ask before starting a mobile project.
How much do mobile app development services cost?
Cost depends on the number of screens, user types and integrations, and whether you need a new back-end or already have one. After a short discovery we give you a clear estimate and a phased plan, starting with the features that matter most to your users.
Do you build apps for both iOS and Android?
Yes. We build with Flutter, which produces apps for both iOS and Android from a single codebase. That keeps design and behaviour consistent across devices, and means updates reach both platforms together rather than being built and tested twice.
How long does it take to build a mobile app?
A focused first version covering the core journeys can take from a few weeks to a few months, depending on scope and whether the back-end already exists. We release in stages, so you can test a working build on your own phone early on.
Can you fix or update an app another team built?
Often, yes. We review the code, the back-end and the release setup first, then fix what is urgent and plan the rest in stages. For Flutter apps we can usually take over directly; for apps built another way, we’ll say honestly after the review whether we are the right team.
Can the app connect to our existing system?
Usually, yes. If your system has an API we connect to it; if not, we can build one. Sublime Groceria, for example, runs on the Sublime Care Cloud API, so its users, lists and content are managed from the Sublime Care Cloud admin.
Do you support the app after it launches?
Yes. We handle bug fixes, updates for new iOS and Android versions, and new features as your users’ needs change. Because we also build and host the API, one team looks after the whole product rather than just the app.
Thinking about a mobile app?
Tell us who it’s for and what they need to do. We’ll help you decide what the first version should include.