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iOS App Development for UK Businesses

Myth Digital is an iOS app development agency in Belfast and London. Our senior in-house team designs and builds iPhone apps that use Apple's platform features, connect to your existing systems and pass App Store review, delivered in phases so you have a working build throughout.

  • App Store-ready build
  • Apple Pay & Sign in with Apple
  • Phased, hands-on delivery
Book a free discovery workshopSee our mobile app services
Since 2015 Building iOS apps in the UK
100% In-house UK teams
10+ yrs Average years of experience in the team
Myth Digital team at work in the studio

An iOS app development agency with in-house UK teams, native builds and full App Store delivery.

Book a free discovery workshop

Expect a working prototype in a matter of weeks and an MVP typically within a few months. We handle everything from UX design and Apple Pay integration through to App Store submission and ongoing support. Because we build and host on Microsoft Azure, your app is scalable and secure from day one. You get a clear, costed plan before any code is written. Learn more about our mobile app development services.

AlphaVictor
Bushmills
Coca-Cola
Complieye
Elecsys
Glen Dimplex
LifePass
The Lir
NHS
The North Face
Perks
Queen's University
Deep RiverRock
SPAR

What types of iOS app do we build?

  • Consumer apps

    Polished App Store Products

    A customer-facing iPhone app designed to look great, work reliably and pass App Store review first time.

  • Internal tools

    Apps for Your Team

    Private apps that connect to your CRM, ERP or internal databases. Give staff a faster, mobile-first way to work. No more switching between three systems on a desktop just to update one record.

  • iPad & multi-device

    Tablet-Optimised Experiences

    iPad apps that utilise the extra screen space to maximising the affect on off-site teams, retail displays or any workflow where a phone screen falls short.

Dark app screen for reporting a known issue

Native iOS or Cross-Platform?

This is a business choice, not a technical debate. If you need deep Apple hardware access or peak performance, native iOS is the right call. If you need to reach iPhone and Android users quickly on a tighter budget, cross-platform gets you there faster. We've made this call both ways: one recent project needed Bluetooth beacon pairing and real-time sensor data, so native was the only sensible route. Another team wanted iOS and Android on a 12-week timeline, so we shipped cross-platform in React Native. We'll recommend the best fit during discovery.

  • Native for deep Apple integration
  • Cross-platform for faster dual launch
  • We advise based on your goals

Apple Platform Features We Build In

iOS users expect apps to feel native. We integrate platform features that speed up tasks, build trust and lift engagement.

Apple Pay
Hand holding a phone with a photo app

Apple Pay

Frictionless checkout that reduces abandoned carts.

  • One-tap payment with Face ID or Touch ID
  • We configure merchant IDs and payment processing end to end
  • Tested against Apple's sandbox environment before every submission
Sign in with Apple
Aerial of the City of London with the Gherkin

Sign in with Apple

Required when you offer third-party login. Simplifies onboarding to a single tap.

  • One-tap account creation via Apple ID
  • Private email relay keeps user data protected
Push Notifications
Phone in jeans pocket showing a compliance app home screen

Push Notifications

Permission-based alerts that bring users back at the right moment.

  • Segmented targeting for higher relevance
  • Reliable token handling and delivery across devices
HealthKit and Device APIs
Phone in a pocket showing a building list app

HealthKit and Device APIs

Connect to Apple sensors and health data with user consent.

  • Read steps, heart rate and sleep where relevant
  • Privacy-first permissions handling built in
Widgets and App Clips
Meeting table with a whiteboard of notes

Widgets and App Clips

Lightweight entry points that increase discovery and daily use.

  • Widgets surface key info on the home screen without opening the app
Myth Digital team at work in the studio

Your App, Your Existing Systems

Most iPhone apps need to pull CRM data, process payments and authenticate users against existing platforms. We build the integration layer that connects your app to platfomr your are already using to best utilise your available data, easily hosted in UK/EU regions for GDPR compliance.

  • Secure API design and build
  • CRM and database connectivity
  • Payment processor integration
  • UK/EU data residency

Where are you starting from?

AlphaVictor app Make it happen The North Face campaign AI development Newell Stores app Software development Juice Jar app App development MPS Data Discovery to deployment The Lir website In-house UK team

How does an iOS app development project work?

You get a working build throughout. No big reveal at the end.

  1. In-Person Discovery Workshop

    We meet at our Belfast or London office to map your problem, users and constraints face to face. By building an understanding of why you are planning the project and what you want to achieve from it we can best design the solution and define the technical approach.

  2. UX Design and Prototype

    Our design team builds an interactive prototype you can tap through on your phone, typically ready within weeks. We test it with real users before moving into development so the flows are validated early.

  3. Phased Development in Sprints

    Working builds land in sprints so you can test with real users and steer direction as we go.

  4. App Store Preparation

    We handle Human Interface Guidelines compliance, privacy labels and the review checklist before submission. We also flag anything Apple has been rejecting lately, because their enforcement priorities shift from quarter to quarter. That's the bit most agencies skip.

  5. Launch and Submission

    Screenshots, metadata and the full App Store submission process, managed on your behalf.

  6. Ongoing Support and Iteration

    Post-launch we maintain the app, apply OS updates and iterate based on real user data. Some clients need a few hours a month; others run a continuous retainer. We flex to fit.

Why choose Myth as your iOS app development agency?

  • UK-Based

    In-house · No outsourcing

    Our team are entirely UK-based and work in-office, we don't outsource work overseas or hire fully-remote developers.

    • UK Team
    • In-office

  • Experts

    Senior · Experienced

    We're experts in all things software and design. Our team is primarily made up of experienced and senior people with years of experience across various languages, frameworks and stacks.

    • Software
    • Design

  • Trusted

    Since 2015

    We've been designing and developing since 2015 and have delivered a wide range of successful projects to market since then.

    • Proven
    • Delivered

  • Friendly

    Fun · Approachable

    We're a friendly and fun bunch of people. We enjoy what we do and don't make things too corporate. Expect a bit of banter and fun.

    • Personable

  • Transparent

    Honest · No surprises

    From our pricing down to our project management, we're transparent and honest. There won't be any surprises when working with us.

    • Clear pricing

Will your app pass App Store review first time?

What separates apps that sail through review from those that bounce back with rejection notices.

A great fit

  • Design follows Apple's Human Interface Guidelines from the start
  • Privacy policy and App Store privacy labels completed before submission
  • No private API usage anywhere in the codebase
  • Tested on real devices, not just simulators
  • Accessibility basics met: VoiceOver labels, contrast ratios, tap targets
  • We've seen apps rejected for something as simple as a missing login credential for the review team. We include a demo account in every submission.

Not the right fit

  • Rushing to submit without a proper design review
  • Treating Apple's rejection feedback as optional
  • Hoping nobody notices the missing privacy nutrition labels
  • Relying solely on simulator testing
  • Bolting on accessibility after launch, when it should have been there from week one

iOS apps we've built

Building iOS apps since 2015

A decade of iOS delivery

Since 2015
Designing and shipping iOS apps
2 offices
UK offices: Belfast and London
300+
Projects delivered in 10+ years
Talk to our team

  • In-house from day one

    Our senior Belfast and London teams design and build every iOS app. The people you meet are the people who write the code.

  • End-to-end Apple platform delivery

    We handle discovery, UX, native or cross-platform builds, App Store submission and post-launch support.

  • Phased builds, not big reveals

    You see working software early and approve progress at each milestone, reducing surprises before launch day.

  • Apps with real integrations

    We've shipped Apple Pay, push notifications, Bluetooth, deep linking and API connections to back-office systems.

Myth Digital team at work in the studio

How much does iOS app development cost?

Most projects start from one of three scopes.

  • 8–12 weeks

    MVP App

    from £20,000

    Validate your idea before committing to a full build.

    • In-person workshop
    • UX research and flows
    • Clickable prototype
  • 3–6 months

    Full Product

    from £50,000

    A polished, submission-ready app your users can download.

    • Design and development
    • App Store submission
    • Post-launch support
  • Rolling

    Support & Growth

    from £2,000/mo

    Ongoing improvements, monitoring and new features after launch.

    • iOS updates and device compatibility
    • Crash monitoring and bug fixes
    • New features in regular App Store releases

Every engagement begins with a discovery call to confirm the right fit.

Myth Digital team collaborating in a studio workshop session

Your whole team under one roof

Every designer and developer on your iOS project works from our Belfast and London studios. No offshore handoffs or timezone gaps. You get in-person discovery workshops and same-day design and development feedback.

  • Designers and developers side by side
  • No offshoring or subcontracting
  • UK regulatory context considered from week one
  • Direct access to senior builders
FAQ

iOS App Development FAQs

How much does iOS app development cost in the UK?

It depends on scope. The pricing tiers on this page give starting points for an MVP and a full product. Simpler apps sit at the lower end and products with complex integrations cost more. You get a fixed-price proposal after a discovery session.

How long does it take to build an iPhone app?

A focused MVP typically takes eight to twelve weeks, and a full product three to six months, including App Store review. We deliver in phases with a working build at every milestone, so you are testing on your own phone early.

Should we build native iOS or cross-platform?

Native iOS is the right call when you need deep Apple hardware access or peak performance. Cross-platform reaches iPhone and Android users from one codebase, sooner and for less. We have made the call both ways and decide it with you during discovery.

Can you build for both iOS and Android at once?

Yes. Most of the apps we build ship on both platforms from a single codebase with one team. Where the product justifies it, we build native apps for each platform side by side.

How do you get an app through App Store review?

By designing to Apple's guidelines from the start, completing privacy labels and policies before submission, avoiding private interfaces, and testing on real devices. We manage the submission and respond to any review feedback until the app is approved.

Can you add Apple Pay and Sign in with Apple?

Yes. We build in Apple Pay for one-tap checkout, Sign in with Apple for fast private sign-up, push notifications and other platform features, configured and tested end to end so they pass review and work from day one.

Can the app connect to our existing systems?

Yes. Most iPhone apps need customer data, payments or sign-in from systems you already run. We build the secure connections between the app and those platforms, and scope any new interfaces during discovery.

Since 2015 Designing and shipping iOS apps
2 offices London and Belfast studios
10+ yrs Average years of experience in the team

Further reading

Practical guides from our team to help you plan your app project.

Explore Our Services

Related capabilities across mobile, design, strategy and ongoing support.

Mobile Development

Startup Services

Design

Strategy & Discovery

Support & Growth

Belfast or London, in person

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