This guide was originally published on the Vitarum blog. Vitarum is a full-cycle app development company working with startups and businesses across the UK and Europe.
Building an iOS app is one of the highest-return moves a business can make — iPhone users spend more per app and convert better than almost any other audience. Here's the full process, step by step.
Is it hard to build an iOS app?
It's very achievable with the right plan. The hard part is rarely the code — it's choosing the right scope, designing something people want to use, and shipping to the App Store without surprises.
How to build an iOS app: 7 steps
- Validate the idea and define scope. Start with the problem, not the features. A focused MVP is the biggest lever on cost and time.
- Design the UX/UI. Follow Apple's Human Interface Guidelines — it improves App Store approval and retention.
- Choose your tech. Native Swift + SwiftUI, or cross-platform (Flutter / React Native) to also cover Android.
- Develop. Build in Xcode in short iterations: core flow first, then APIs and secondary features.
- Test on real devices. Cover functionality, performance, security and edge cases across iOS versions.
- Submit to the App Store. You need an Apple Developer account ($99/year). App Review usually takes 24–48h.
- Launch, measure, iterate. The first 90 days of feedback shape your roadmap.
How much does it cost?
- Simple app: £8,000–£20,000
- Mid-complexity (accounts, back end, integrations): £20,000–£60,000
- Complex (real-time, payments, AI): £60,000+
How long does it take?
A focused MVP typically ships in 2–4 months; complex apps 4–8 months.
Native Swift vs cross-platform
Native Swift = best performance and latest iOS features. Cross-platform = launch on iOS and Android from one codebase, faster and cheaper when reach matters most.
👉 Full guide with FAQ and cost breakdown: How to Build an iOS App in 2026 — Vitarum
Need help building yours? See Vitarum's mobile app development services.
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