Mobile app development for iOS and Android apps people keep using.

A focused cross-platform Flutter app costs £15,000–£35,000. A native iOS or Android app with complex integrations costs £25,000–£60,000. A full marketplace or enterprise app costs £50,000–£100,000+. The main drivers are the number of screens and user roles, integrations, payments, real-time features and whether you build once or twice. We give a written quote, with scope and exclusions agreed up front, after a free discovery call.

A focused MVP app typically takes 8–12 weeks. A full-featured app with integrations, push notifications and payment processing typically takes 16–20 weeks. Leave some slack for App Store and Google Play review on first submission. We build in two-week sprints and share test builds throughout.

If your users are on both platforms, which is true for most UK and US audiences, build for both with Flutter: one codebase, two platforms, and significantly lower cost than two native apps. If your users are concentrated on one platform, or the app depends on deep platform features, start native on that platform and add the other later.

Flutter is usually the best-value choice for new apps: near-native performance, a consistent custom UI and the most code shared between iOS and Android. React Native makes more sense when your team already writes JavaScript or TypeScript, or you want to share code with an existing React web app. Both are production-ready; we recommend based on your team and roadmap.

Yes. Flutter is Google’s open-source UI framework for building native-quality apps from a single codebase, and Google’s own showcase includes apps from BMW, eBay, Alibaba and Google Pay. Performance is near-native on both iOS and Android for the vast majority of business and consumer apps.

Yes. We handle the full submission process for both stores: developer account setup, App Store review requirements, privacy declarations, metadata, screenshots and Play Store listing optimisation. The apps are published under your own developer accounts, so you own the listings.

You do. Ownership of the source code and design files transfers to you on full payment, as set out in your contract, and the store listings and backend accounts are set up under your business. There are no licence fees, and any developer can continue the app after us.

Yes. We integrate AI into mobile apps through APIs (OpenAI, Claude, Gemini) or on-device models (Core ML on iOS, TensorFlow Lite on Android). Common features are image recognition, voice commands, chat assistants and personalisation. On-device models keep data on the phone and remove per-call API costs.

We use secure authentication with biometrics where appropriate, encrypt data in transit and on the device, keep secrets out of the app bundle, apply least-privilege access to backend APIs and follow Apple and Google privacy requirements. For UK and EU users we design data handling to support GDPR requirements, and HIPAA-aware handling for US health apps.

Yes. We regularly take over apps from other development teams. We start with a code audit, document what we find, agree a clear scope for fixing technical debt, and then continue development: so you have a clear picture of what you are inheriting before committing.

Yes, through optional support and maintenance plans agreed with you. These can cover bug fixes, OS compatibility updates when Apple and Google release new versions, and minor feature additions. We also offer monthly App Store Optimisation (ASO) retainers and ongoing feature development.

Choose an app when users return often and need device features such as the camera, GPS, offline access, biometrics or push notifications. Choose a mobile website or progressive web app when usage is occasional, discovery through search matters most, or budget is tight. We will tell you honestly which fits before quoting.