iOS Android App Development London

A focused MVP — core features, polished UX, App Store-ready — typically takes 12 to 16 weeks for most London SME projects. Apps with custom backends, payment integrations, or multi-user account structures run 20 to 26 weeks. We scope in detail before we quote, so timelines are fixed before development starts — not revised halfway through. London businesses plan around delivery dates, and we treat them accordingly.

If your app needs deep device integration — camera, GPS, biometrics, push notifications with rich payloads — native Swift or Kotlin gives you the best performance and tightest OS alignment. For businesses prioritising speed-to-market or working within tighter budgets where native performance isn't critical, React Native delivers excellent results. We recommend based on your actual use case and user expectations, not on what's simplest for us to build.

A well-scoped MVP with core features, onboarding, and App Store submission typically starts from £15,000 to £25,000. Apps with complex backends, multi-role user systems, or payment infrastructure sit higher. We don't issue guesswork quotes — we define scope precisely first, then price it. London businesses consistently find that the retention and revenue uplift from a properly built app makes the investment straightforward to justify within the first year.

Yes — we manage the full submission process for both Apple App Store and Google Play, including metadata, screenshots, privacy policy compliance, and review correspondence if Apple or Google raises questions. First-time iOS submissions typically take one to three business days for approval; Android reviews are usually faster. We brief you on what to expect at each stage so there are no surprises close to your launch date.

Both are options. If you have an existing app with a codebase worth extending, we audit it first and give you an honest assessment. Legacy code in poor condition often costs more to extend than a clean rebuild saves — we will tell you directly if that is the case rather than quoting for work that will cause problems later. Many London businesses come to us after a previous agency left them with something unmaintainable.

We test across a defined matrix covering the device models most commonly used in the UK — the dominant Android handsets and the last three iPhone generations. QA includes both automated testing and real-device testing before any release. We also monitor crash reports post-launch and issue patches promptly. London's tech-forward user base tends to run relatively current devices, which keeps compatibility complexity manageable for most projects.