Mobile app design & development · UK-wide

Apps people open every day.

Apps your customers actually want to open. We design, build, launch and look after iOS and Android apps in-house, made to feel fast and effortless.

iOS Android React Native Flutter
PlatformsiOS + Android
Sectors covered14
Typical build8–16 wks
YoursTo own
See the work
iOS Android Cross-platform React Native Flutter App Store & Play
Why it matters

An app earns
its place.

A spot on your customer's home screen is one of the most valuable things your business can win. A slow, clunky or pointless app gets deleted in a week. A genuinely useful one becomes a daily habit, and a direct line to your customer.

We design apps people actually want to open: fast, intuitive and built around a real job to be done. Senior people, in-house, from first sketch to store launch and well beyond.

What we build

Every kind of app,
built to be used

From a customer booking app to the internal tool that runs your day, designed around a real job and the people who'll use it daily.

Most popular (01)

Customer & Consumer Apps

Booking, loyalty, on-demand and membership apps that put your business in your customer's pocket. Beautifully designed, effortless to use, and built to bring them back.

Scope my app
Consumer app · design & build Bespoke consumer mobile app design and development by Flitzen
(02)

Business & Internal Apps

Apps for your field teams, operations and staff that cut admin and keep everyone in sync. The tools that quietly run your business better.

Field teamsOperationsStockWorks offlineUser roles
(03)

Cross-platform Apps

One build, both platforms. With React Native and Flutter, your iOS and Android apps come from a single build, faster to make and easier to look after.

React NativeFlutteriOS + AndroidOne buildQuicker launch
(04)

Booking & On-demand

Appointments, deliveries and services in real time, with calendars, payments and notifications all working together in one smooth flow.

SchedulingPaymentsLive statusRemindersReviews
(05)

Test-the-idea Apps

Test your idea fast. A focused, well-built first version that real users can try, then improve with confidence based on what works.

First versionFast launchUser testingAnalyticsImprove
(06)

App Modernisation

Inherited a stalled or crashing app? We rebuild, refresh and steady it, back in the stores and up to date, without losing your users.

RescueRebuildRedesignOS updatesMigration
Not sure which fits?

Tell us the goal.

We'll recommend the right build and platform, scope it clearly and send a fixed price. No jargon, no obligation.

Get a quote
Built in as standard

The essentials, never
an add-on

The things that separate a real product from a rough demo, we build in from day one, because an app without them isn't finished.

Offline ready

Works on the Tube, in a basement, anywhere. Smart caching and sync so a dropped signal never breaks the experience.

Push notifications

Timely, useful nudges that bring users back, like reminders, updates and offers, without the spam that gets apps muted.

App Store & Play launch

We handle the full submission to Apple and Google, including listings, screenshots, getting you found, and the review and approval process.

Secure by design

Encrypted data, secure auth and biometric login. We protect your users and keep you compliant from the first commit.

Analytics & crash reporting

See how the app is really used and catch problems before your users do, giving you the data to steer every improvement after launch.

Ongoing updates

New iOS and Android updates can break things. We keep your app current, stable and in the stores. Real care, not just a handover.

How we build

From first call
to App Store

A clear, senior-led path. Open at every step, on time, and to a fixed price agreed before we start.

01

Discovery & strategy

We pin down the job your app must do, who it is for, which platforms, and the must-have features, then agree the scope, timeline and a fixed price.

02

Design & preview

Sketches first, then a clickable preview in your brand. You feel the real app on a phone before a single line of code is written.

03

Build & test

Senior developers build it fast, secure and reliable, tested on real phones, with early versions you can try on your own device as it grows.

04

Launch & grow

We submit to both stores, handle approval and help people find you, then stay on for updates, insights and new features as you grow.

Good questions

Before you brief us

Ask us anything

It depends on what you need, but you'll always know upfront. After a short call we send a written plan and a fixed price, with no hourly rates that quietly creep up. A focused MVP is a few weeks of work; a full multi-platform product, a few months.

Most apps take eight to sixteen weeks from kickoff to store launch, depending on complexity. You'll get a realistic, written timeline with your quote, and you review builds throughout, so there are no surprises at the end.

Both are options. A cross-platform build with React Native or Flutter creates your iOS and Android apps from one project, which is faster and better value for most businesses. Where an app needs maximum performance or deep phone features, we build it fully native. We'll recommend the right path for your goals and budget, and tell you why.

Yes. We handle the full submission to both the Apple App Store and Google Play, including store listings, screenshots and helping people find you, and we manage review and approval for you, so launch day is smooth.

Yes. We keep your app current with new iOS and Android releases, fix issues, monitor crashes and add features as you grow. Support and care, not a handover and goodbye.

Absolutely, it's a common project for us. We take on inherited and stalled apps, modernise the build, refresh the design and get them stable and back in the stores, without losing your users or their data.

Yes. You own the code, the design and the store accounts, everything. No lock-in, no holding your app hostage. It's yours.

Ready when you are

Let's build an app
worth keeping.

Request a quotation