Digital Online

Mobile App Development Services

Your app lives on the most personal device your customers own — so it has to be fast, intuitive and reliable from the first tap. We design, build and launch iOS, Android and cross-platform apps that people keep using, then support and grow them after release.

Start A Project

The more you tell us, the sharper the first reply.

By submitting this form, you agree to our Privacy Policy

  • Native and cross-platform expertise
  • Product strategy to App Store launch
  • Secure, scalable back-ends
  • Support and updates after release

A Mobile App Development Company Focused on Retention

Downloads are easy to celebrate; retention is what makes an app successful. We design apps around the moments that bring users back — quick tasks, useful notifications and experiences that feel native on each platform — and we measure success by engagement, not installs.

Product strategists, designers, mobile engineers, back-end developers and QA specialists work as one team. You get a clear roadmap, fortnightly builds on your own phone and an app that's ready for real-world scale, security reviews and App Store scrutiny.

Mobile apps launched
150+
Average App Store rating
4.7★
Downloads across client apps
10M+

Ready to Turn Your App Idea Into a Product?

Talk to an App Strategist

Mobile App Development Services for Every Platform

Native or cross-platform, consumer or enterprise — every service below is delivered by mobile specialists who follow Apple and Google's guidelines and build for performance, security and long-term maintainability.

Start Your App Project
01

Android App Development

Native Android apps built with Kotlin and Jetpack Compose that perform smoothly across the huge range of Android devices.

Explore Android App Development

Proven Mobile App Portfolio

A selection of the apps we design and build. Each one launched with a clear success metric — retention, transactions, bookings — and kept improving after release.

Fintech

Digital Wallet App

The Challenge

A payments startup needed a secure wallet app that felt as simple as messaging, while meeting strict security requirements.

The Solution

We built native iOS and Android apps with biometric login, instant transfers and spending insights, backed by a secure API.

The Impact

  • Biometric login and device binding
  • Instant peer-to-peer transfers
  • Passed independent security testing
Healthcare

Telehealth Companion

The Challenge

A clinic group's patients struggled to book, join and follow up on video appointments.

The Solution

We built a Flutter app combining booking, video consultations, prescriptions and reminders in one place.

The Impact

  • Booking to consultation in one app
  • Appointment and medication reminders
  • Accessible design for older patients
Consumer

Social Lifestyle App

The Challenge

A lifestyle brand wanted to turn its online audience into an engaged community it owned.

The Solution

We designed and built a React Native app with personalised feeds, challenges and creator content.

The Impact

  • Personalised content feed
  • Community challenges and streaks
  • Push notifications users opt into
Ecommerce

Retail Shopping App

The Challenge

A retailer's mobile website converted poorly and loyal customers wanted a faster way to reorder.

The Solution

We built a shopping app with saved baskets, one-tap reorder, loyalty rewards and Apple and Google Pay.

The Impact

  • One-tap reordering
  • Integrated loyalty programme
  • Wallet payments at checkout

Not Sure Whether to Go Native or Cross-Platform?

Get Platform Advice

Trusted By Leaders,Proven By Results

How Much Does App Development Cost?

Most mobile apps cost between $25,000 and $250,000+, depending on features, platforms, integrations, back-end complexity and design depth.

MVP

Validate an idea

$25,000 – $60,000

A focused first release with the core features needed to test your idea with real users.

  • Cross-platform (iOS & Android)
  • Core user journeys
  • Analytics & crash reporting
Discuss an MVP
Most Common

Growth

Market-ready product

$60,000 – $150,000

A polished app with integrations, admin tools and a scalable back-end. This is where most funded products land.

  • Native or cross-platform
  • Custom back-end & admin
  • Payments, maps & notifications
Estimate My App

Enterprise

Complex & regulated

$150,000+

Apps with complex workflows, offline use, strict security or integration with enterprise systems.

  • Enterprise SSO & security
  • Offline-first architecture
  • Compliance support
Plan an Enterprise App

Final pricing is confirmed after a discovery workshop and feature scoping.

Need an MVP in Front of Users Quickly?

Plan Your MVP

Our App Development Process

A proven process that gets working builds onto your phone early and keeps you involved all the way to launch.

  1. 01

    Discovery & Strategy

    We clarify goals, users, competitors and the features that matter most for the first release.

  2. 02

    UX & Prototyping

    We map journeys and build clickable prototypes to test with users before development.

  3. 03

    UI Design

    Platform-appropriate interfaces designed for iOS and Android conventions.

  4. 04

    Agile Development

    Fortnightly sprints deliver installable builds you can test on your own device.

  5. 05

    Testing & QA

    Device testing, automated tests, performance and security checks before release.

  6. 06

    Launch & Growth

    App Store submission, monitoring, updates and feature development after launch.

App Standards We Build To

The quality bars every app meets before it reaches your users.

  • Apple HIG & Material Design

    Interfaces that feel native on each platform.

  • OWASP Mobile Top 10

    Protection against the most common mobile security risks.

  • Accessibility

    Support for screen readers, dynamic type and contrast.

  • Performance Budgets

    Fast launch times and smooth scrolling on mid-range devices.

  • Privacy Compliance

    App Store privacy labels, consent and GDPR requirements.

  • Crash Monitoring

    Real-time crash reporting and alerting from day one.

  • Automated Testing

    Unit and UI tests protect critical journeys.

  • CI/CD Pipelines

    Automated builds and releases for reliable updates.

Technologies Our App Developers Use

Proven mobile technologies chosen for performance, maintainability and your team's long-term needs.

  • Swift
  • SwiftUI
  • Kotlin
  • Jetpack Compose
  • Xcode

High-Impact Features We Build Into Apps

Capabilities that make apps useful, engaging and commercially successful.

  • 01Biometric Login
  • 02Push Notifications
  • 03In-App Payments
  • 04Offline Mode
  • 05Maps & Geolocation
  • 06Real-Time Chat
  • 07Camera & Scanning
  • 08Wearable Integration
  • 09In-App Analytics
  • 10Personalised Content

Mobile Apps for High-Growth Industries

We understand the users, regulations and integrations that matter in your sector.

  • 01

    Fintech

    Secure banking, payments, wallet and investing apps.

  • 02

    Healthcare

    Telehealth, patient engagement and wellness apps.

  • 03

    Ecommerce & Retail

    Shopping, loyalty and click-and-collect apps.

  • 04

    On-Demand

    Booking, delivery and service marketplace apps.

  • 05

    Logistics

    Driver, tracking and warehouse apps.

  • 06

    Education

    Learning apps and student companion apps.

  • 07

    Real Estate

    Property search, viewing and tenant apps.

  • 08

    Fitness & Lifestyle

    Workout, nutrition and habit-building apps.

Is Your App Losing Users to Crashes or Bad Reviews?

Get a Free App Audit

Why Choose 360 Digital Online as Your App Development Company?

We build apps as long-term products, not one-off projects — with the strategy, engineering and support that implies.

  • Product Thinking

    We challenge features that don't serve users and prioritise what drives retention.

  • Native and Cross-Platform

    Honest advice on the right approach, and experts in both.

  • Full-Stack Teams

    Mobile, back-end, design and QA under one roof.

  • Long-Term Support

    OS updates, monitoring and new features after launch.

Where App Development Is Heading Next

The emerging capabilities we're already building into mobile products.

  • 01

    On-Device AI

    Private, fast AI features that run directly on the phone.

  • 02

    AI Assistants in Apps

    Conversational help and smart automation inside your app.

  • 03

    App Clips & Instant Apps

    Lightweight experiences without a full install.

  • 04

    Wearables & Health

    Integration with watches, rings and health platforms.

  • 05

    Spatial Experiences

    AR features that blend digital content with the real world.

  • 06

    Passkeys

    Passwordless, phishing-resistant sign-in.

Ready to Build an App People Keep Using?

Start Your Project

Mobile App Development FAQs

How much does it cost to build an app?

Most apps cost between $25,000 and $250,000+, depending on features, platforms, design, integrations and back-end requirements. We provide a detailed estimate after a discovery workshop.

How long does app development take?

An MVP typically takes 3–4 months. Full-featured apps usually take 4–9 months, depending on complexity.

Should we build native or cross-platform?

Cross-platform (Flutter or React Native) suits most apps and reduces cost. Native (Swift and Kotlin) is best for apps needing maximum performance or deep platform features. We'll recommend based on your needs.

Do you publish apps to the App Store and Google Play?

Yes. We handle App Store and Google Play submission, including store listings, privacy details and responding to review feedback.

Will we own the app's source code?

Yes. You own the source code and all intellectual property, stored in repositories you control.

Do you build the back-end as well?

Yes. We build APIs, databases, admin panels and cloud infrastructure, or integrate with your existing systems.

Do you support apps after launch?

Yes. We offer maintenance plans covering OS updates, bug fixes, monitoring, performance and new features.

Let's Connect With Us

Have A ProjectIn Mind?

Tell us about your project — whether it's a website, an app, SEO or marketing.

  • Head OfficeAdd the street address, city and postcode+00 000 000 0000
  • Regional OfficeAdd the street address, city and postcode+00 000 000 0000

Get in Touch Now!

By submitting this form, you agree to our Privacy Policy