justmobileapps.co.uk
Services

Four disciplines.
One shipping team.

A mobile-only studio built to UK standards. No web projects, no side consultancy, no generalist dilution. Every engineer, every designer, every QA lead ships exclusively to the iOS App Store and Google Play — following UK design and compliance benchmarks that global clients trust.

Discuss Your Requirements See Our Work

01 — What we build

Mobile expertise, end to end.

From the first wireframe to App Store approval — and every sprint in between — you get UK-standard specialists, not generalists.

01

Swift

Native iOS Development

App Store–ready from day one.

We build exclusively for Apple platforms to UK App Store standards, using the latest Swift and SwiftUI primitives. No legacy Obj-C dead weight, no cross-platform compromises — just fluid 60fps interfaces that feel native because they are.

  • →Widgets & Live Activities (iOS 17+)
  • →StoreKit 2 in-app purchases & subscriptions
  • →HealthKit, CoreMotion, ARKit integrations
  • →Offline-first Core Data + CloudKit sync
  • →App Clips for frictionless onboarding
  • →App Store submission & TestFlight management
Swift SwiftUI Xcode

02

Kotlin

Native Android Development

Built for the full device matrix.

Modern Android apps written in Kotlin with Jetpack Compose UI, tested across hundreds of real devices. We ship with adaptive layouts, accessibility support, and Play Store compliance from the first sprint.

  • →Jetpack Compose UI with Material 3
  • →Coroutines, Flow & WorkManager
  • →Play Billing & Google Pay integration
  • →CameraX, ML Kit & Maps SDK
  • →Adaptive layouts for phones, tablets & foldables
  • →Play Store listing optimisation & review flow
Kotlin Jetpack Compose Android Studio

03

Flutter

Cross-Platform Apps

One codebase. Two stores. Near-native performance.

When budget or timeline demands a shared codebase, we choose Flutter or React Native based on your stack — not what is easiest for us. Custom native modules bridge any gap the framework cannot reach on its own.

  • →Flutter 3 with Material & Cupertino widgets
  • →React Native with New Architecture (Fabric)
  • →Expo managed & bare workflow
  • →Custom native modules (Swift / Kotlin bridge)
  • →Shared design token system across platforms
  • →CI/CD pipelines via Fastlane & Bitrise
Flutter React Native Expo

04

Figma

UI/UX & App Strategy

Design decisions made before a line of code.

Product strategy and UX design are not optional extras — they are how we prevent expensive rebuilds. Every engagement follows UK product design principles and starts with a discovery sprint that produces a validated prototype and a fixed-cost estimate.

  • →Product discovery & scope workshops
  • →User journey mapping & information architecture
  • →High-fidelity Figma prototypes
  • →Usability testing with real users
  • →Design system & component library handoff
  • →App Store icon, screenshot & ASO asset production
Figma Prototyping User Research

02 — Technology

The stack that ships to production.

We pick tools that have proven themselves in the stores, trusted by UK and global product teams alike — not whatever landed on Hacker News last week.

iOS

Swift

iOS

SwiftUI

Android

Kotlin

Android

Jetpack Compose

Cross-platform

Flutter

Cross-platform

React Native

Cross-platform

Dart

Cross-platform

TypeScript

Design

Figma

Backend

Firebase

Backend

Supabase

DevOps

Fastlane

03 — How we engage

Three ways to work with us.

Choose the model that fits your stage. Trusted by UK startups, scale-ups, and enterprise teams — we will advise honestly if one is a better fit than another for your situation.

01

Fixed-Price Project

Best for: Defined scopes & new apps

After a paid discovery sprint we scope the entire build, agree a fixed price and stick to it. No surprises, no scope creep, no change-order games.

  • →Detailed functional spec before contract
  • →Milestone-based payment schedule
  • →Change requests priced separately and transparently
02

Time & Materials

Best for: Evolving products & ongoing work

A dedicated team working in two-week sprints, billed monthly. You steer the backlog; we ship what is at the top every Friday.

  • →Flexible scope, monthly billing
  • →Slack access to your engineers
  • →Fortnightly sprint reviews & velocity reports
03

Dedicated Team

Best for: Scale-ups & product companies

An embedded mobile squad that operates as a seamless extension of your in-house team — same tools, same ceremonies, same Slack.

  • →Exclusive team allocation (not shared)
  • →Joins your existing sprint cadence
  • →Scales up or down with 30 days notice

UK-Backed. India-Built.

Tell us what you are building. We will scope it within 48 hours.

No sales sequence, no obligation. A scoped estimate and realistic timeline — in writing — sent to your inbox within 48 hours.

Request a Free Estimate View Pricing