Originally published on the Vitarum IT blog . Vitarum IT is a full-cycle app development company working with startups and businesses across the US, UK and Europe. Android runs on 70%+ of the world's smartphones. Here's the full process to build an Android app. How to build an Android app: 7 steps Validate the idea & scope. A focused MVP is the biggest lever on cost and time. Design with Material Design. Plan for many devices and OS versions. Choose tech. Native Kotlin + Jetpack Compose, or cross-platform (Flutter / React Native) to also cover iOS. Develop in Android Studio in short iterations. Test across real devices (fragmentation is real). Publish to Google Play (one-time $25 developer fee). Launch, measure, iterate. Cost Simple: £7,000–£18,000 Mid-complexity: £18,000–£55,000 Complex (real-time, payments, AI): £55,000+ How long? A focused MVP ships in 2–4 months . Native Kotlin vs cross-platform Native = best performance & latest Android features.…