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Mobile App Development — London, UK

You Have the Idea. We Build the App.

Custom iOS and Android apps built for UK businesses — from the first wireframe to live in the App Store. Native, cross-platform, and progressive web apps delivered by a London team that ships.

Tell Us Your Idea →See Apps We've Built ↓
iOS & Android experts
From MVP to enterprise
London-based team
App Store submission included
nettrackers.app/mobile/app-dashboard
● App Live
Live Preview
ApexTrack
Good morning, James 👋
Today's Revenue
£4,280
↑ +18% vs yesterday
Orders
47
Users
1.2k
🏠Home
📊Analytics
💬Messages
⚙️Settings
Total Downloads
84,200
+12% this month
App Store Rating
4.8 ★
1,240 reviews
Monthly Active Users
31,400
+24% YoY
Crash-Free Sessions
99.7%
Excellent stability
Platform Split
iOS
58%
Android
42%
Release History
v2.4.1Performance improvements2d ago
v2.4.0Offline mode + dark theme3w ago
v2.3.5Bug fixes & security patch6w ago
Build Pipeline
Discovery & UX
Complete
UI Design
Complete
iOS Development
Complete
Android Build
Complete
QA Testing
Complete
App Store Review
Approved
Live in Store
✓ Published
iOS + Android
Platforms
4.8 App Store
Rating
99.7% sessions
Crash-Free
MVP in 10–14 weeks
Delivery
Myth

“App development takes years and costs a fortune.”

Reality

A well-scoped MVP can be live in 10–16 weeks.

Myth

“You need a technical background to brief an app project.”

Reality

An idea and a clear goal are enough. We handle the rest.

Myth

“Apps built in the UK cost more than going offshore.”

Reality

UK-built apps cost less to maintain and far less to fix when done right.

Myth

“Once it is built, the expensive part is over.”

Reality

A good app partner stays with you through every update and release.

App Types

What Are You Building?

Customer-Facing App

A product your customers download and use directly — booking, shopping, services, content, or community. Built to acquire, engage, and retain users at scale.

iOS & Android consumer apps

Internal Business App

A tool your team uses in the field, in the warehouse, or in the office — replacing spreadsheets, paper forms, and broken manual processes.

Field service, workflow, and operations apps

Platform or SaaS App

A mobile layer on top of your existing software product — or a new mobile-first platform built from the ground up.

SaaS and platform app development
Services

Our Mobile App Development Services

01

iOS App Development

Native Swift development for iPhone and iPad. Built to Apple's standards and designed to pass App Store review the first time.

Swift · Xcode · SwiftUI · Core Data · Apple Push Notifications

02

Android App Development

Native Kotlin development for the full range of Android devices and screen sizes — not just the flagship.

Kotlin · Android Studio · Jetpack Compose · Firebase · Google Play Services

03

Cross-Platform Development

One codebase. Both platforms. React Native and Flutter for businesses that need iOS and Android without two separate build costs.

React Native · Flutter · Expo · Dart · JavaScript

04

MVP App Development

Your idea validated quickly and affordably. We scope, design, and build your minimum viable product to test with real users.

Timeline: 8–14 weeks · Best for: Startups, new product ideas

05

Enterprise Mobile Apps

Large-scale applications with complex logic, backend integrations, role-based access control, and high security requirements.

Best for: Field service, logistics, healthcare, finance

06

Progressive Web Apps

App-like functionality delivered through the browser — no app store required. Offline capability, push notifications, fast load.

Best for: Content apps, low-friction experiences

07

App UI/UX Design

User interface and experience design built around real user behaviour. Wireframes, prototypes, user testing, and developer handoff.

Wireframes · Prototype · Design system · Developer handoff

08

App Backend & API Development

The infrastructure behind your app — databases, APIs, authentication, push notifications, and cloud hosting. Built to scale.

Node.js · Laravel · AWS · Firebase · REST API · GraphQL

The Journey

From Idea to Live App — The Journey

01
Week 1–2

Discovery

We map your idea into a real specification. User journeys, feature list, technical architecture, platform decision, and project scope. Everything documented and agreed before we design a single screen.

02
Week 2–4

UX & Prototype

Wireframes for every screen. A clickable prototype you can test with real users before we invest in visual design. This is where most of the expensive mistakes are prevented.

03
Week 4–6

Visual Design

Every screen designed in full — iOS and/or Android. Brand-aligned, accessibility-considered, and developer-ready. You approve before development starts.

04
Week 6–14+

Development

Built in sprints. You see working functionality every two weeks — not a big reveal at the end. Backend, frontend, and integrations developed in parallel where possible.

05
Week 12–16

Testing & QA

Functional testing, device testing, performance testing, and security review. We do not submit to the app store until the app is genuinely ready.

06
Week 14–18

App Store Submission

We manage the full submission for Apple App Store and Google Play — metadata, screenshots, compliance documentation, and review responses.

07
Ongoing

Post-Launch Support

Bug fixes, OS update compatibility, performance monitoring, user feedback analysis, and feature releases. Your app grows after launch — not just at it.

Comparison

Native, Cross-Platform or PWA — Which Is Right for Your App?

Native
Cross-Platform
PWA
Performance
Maximum
Near-native
Good for content apps
Cost
Higher — two builds
Lower — one codebase
Lowest
Platform features
Full access
Most features
Limited device access
App store presence
Yes
Yes
No
Time to market
Longer
Faster
Fastest
Best for
Complex, high-performance apps
Most business apps
Content and lightweight tools
Our recommendation
When performance is critical
For most UK businesses
When app store is not required

Not sure which fits your project? We will advise clearly on a free scoping call. Book a free call

Industries

Industries We Build Mobile Apps For

Healthcare & Medical

Patient apps, appointment booking, remote monitoring, clinical tools, GDPR and NHS-compliant builds.

Finance & FinTech

Mobile banking, investment platforms, expense management, payment apps, and PCI DSS-compliant builds.

Retail & E-Commerce

Shopping apps, loyalty programmes, in-store tools, mobile commerce, and push notification campaigns.

Education & Training

Learning platforms, course delivery, progress tracking, student portals, and interactive content apps.

Field Service & Logistics

Job management, route optimisation, digital job sheets, real-time tracking, and offline functionality.

Hospitality & Travel

Booking apps, loyalty schemes, event management, table ordering, and guest experience platforms.

Startups & MVPs

Idea validation, investor-ready MVPs, rapid prototyping and scalable foundations for early-stage products.

Construction & Property

Site inspection tools, snag reporting, project management apps, and document management for field teams.

Recent Work

Apps We Have Built

Live on the App Store and Google Play. Real products, built by our team.

eConX icon
eConX
Business Support Platform
BusinessiOS

Personalised portal to Northern Ireland's entire business support ecosystem — connecting entrepreneurs with funding, advisors, and resources in one place.

EcoGo icon
EcoGo
Fleet Management
TransportationAndroid

Fleet management in the palm of your hand — real-time vehicle tracking, driver management and reporting for sustainable mobility operators.

myEYC screenshot
myEYC icon
myEYC
European Youth Card
LifestyleiOS & Android

Access your digital European Youth Card and discover thousands of discounts across Europe — travel, culture, food and more, right from your phone.

Why Us

Why UK Businesses Trust Us to Build Their Apps

We are not an app factory. We take on a limited number of projects at any one time — because every app we build gets our full attention, not a slice of it.

London-based development team

Every line of code is written in-house. No offshoring, no subcontracting, no communication gaps.

Fixed price on every project

Scope agreed, price fixed, timeline confirmed — before we start. What we quote is what you pay.

You own everything

Source code, design files, and backend infrastructure — completely and unconditionally yours from day one. No lock-in.

We build for scale

Every app is architected to handle growth — more users, more features, more platforms — without a rebuild.

We stay involved after launch

App store updates, OS changes, user feedback, and new features. A long-term partner, not a one-project agency.

FAQ

Common Questions About Mobile App Development

Related Services

You Might Also Need

Web Development

The web platform or admin dashboard that connects to your app's backend.

Learn more

SEO Services

Drive organic traffic to your app's website and app store listing.

Learn more

E-commerce Development

Custom e-commerce builds that integrate with your mobile app and wider systems.

Learn more
Free App Scoping Call

Your App Idea Deserves a Proper Conversation.

Not a quote form. Not an automated email. A real conversation with a developer who will tell you whether your idea is ready to build, what it would take, and what it would cost.

No obligations. No jargon. Just clarity.

Book a Free App Scoping Call
Call
+44 20 4572 4940
Email
hello@nettrackers.co.uk