Mobile apps built to perform, delight, and retain

A great mobile app is one of the most direct relationships a brand can have with its users. We build native and cross-platform apps that are fast, intuitive, and technically excellent.
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Users judge your app in three seconds

We build apps users want 
and businesses grow with

We combine platform expertise with human-centred design to build apps that do exactly what users need. Whether native or cross-platform, we engineer to the standard your brand deserves.

Our app development service capability

We take a performance-first, design-led approach to app development, working with your product and design teams to build apps that are technically excellent and genuinely enjoyable to use.
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Native iOS development

We build native iOS applications in Swift, delivering the performance and platform integration Apple users expect.
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Native Android development

We build native Android applications in Kotlin that perform consistently across the Android device landscape.
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Cross-platform development

We build cross-platform apps in React Native and Flutter, delivering near-native performance across iOS and Android.

App UI/UX implementation

We implement designs with full fidelity, preserving the micro-interactions and visual quality of a polished app.
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App architecture & technical design

We design the technical architecture before code is written, making key decisions about state management and data flow.

Backend & API integration

We build the backend services and API integrations your app depends on, with secure data layer and authentication systems.

Push notifications & messaging

We build notification infrastructure for iOS and Android that handles push systems and makes alerts useful, not intrusive.
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App performance optimisation

We identify and resolve the performance issues that make apps feel slow, draining, or unreliable.

App Store & Google Play submission

We manage the App Store and Google Play submission process, handling requirements, metadata, and review communications.

App maintenance & updates

We manage ongoing maintenance, OS updates, and dependency updates to keep your app current, performant, and compliant.

Our partnership with Atomic has been essential in delivering a new level of digital convenience for our guests. The app enriches each stage of their short break, aligning perfectly with our commitment to offering the best possible guest experience.

We succeed together.

How we built a No.1 app
 for Center Parcs guests

Over 70,000 downloads in its first week, a 15% uplift in bookings, and No.1 in the travel app charts. We designed a native iOS and Android app that made it simpler for Center Parcs guests to plan, book, and get the most from their stay.

Our app development approach is built on one thing:
Platform-native quality, regardless of how you build

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Native performance where it matters

We build apps with the performance users expect: fast launch times, smooth animations, and battery efficiency, whether native or cross-platform.
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Design and engineering in lockstep

Our development team works with our design team throughout every project, ensuring the experience we design is the experience we build.

Built for the app stores

We meet Apple and Google's requirements, manage submissions, and implement the release practices that keep your app current, compliant, and performing.

We build apps that perform
 and earn their place

Atomic's app development team builds native and cross-platform mobile applications that perform for your users and scale with your business, from concept and design through to launch and beyond.

Got questions about app development? We've got answers.

Get in touch

App development is the process of designing, building, testing, and launching software applications for mobile devices, covering iOS, Android, and cross-platform environments.

It depends on your users, budget, and feature requirements. Native apps offer best performance and platform integration. Cross-platform reduces cost when requirements suit both platforms.

A straightforward app typically takes three to six months from design to App Store submission. More complex applications with multiple integrations and features require longer timelines.

App development investment varies significantly by scope, complexity, and platform. We scope every project individually and give a clear estimate once we understand your app's requirements.

We manage the full App Store and Google Play submission process, ensuring your app meets platform guidelines, passes review, and is configured correctly for distribution from launch.

Performance is built in from the start through good architecture decisions, code review, profiling, and testing under real-world conditions before submission and after launch.

Yes. We build native iOS and Android apps as well as cross-platform applications using React Native and Flutter, depending on what best fits your project and long-term product strategy.

We offer post-launch support, monitoring, and maintenance retainers. We also support ongoing feature development, helping your app evolve as user needs and platform requirements change.

A clear brief covering the app's purpose, target users, and core functionality, along with any existing designs or specifications. We'll structure discovery from there.

Yes. We regularly take on existing apps for improvement, modernisation, or feature development. We begin with a technical and UX review before recommending the right course of action.

Explore our related services

API development

Integrations your systems can depend on

We design and build robust APIs that connect your platforms, products, and third-party services, engineered for security, scalability, and long-term reliability.

Web development

Platforms built to perform and grow

We build fast, accessible, and secure web platforms using modern technologies, designed to scale with your business and stay reliable over time.

Technical planning

The technical foundation your build depends on

We define the architecture, technology choices, and engineering constraints that give your project the clarity it needs to build accurately, on time, and to the right standard.

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