Starting with a well-defined product goal and awareness of device variety is essential in Android app development. By outlining the MVP, choosing an architecture, and mapping key user flows early, the initial release stays focused and minimizes rework as the app scales.

Once the foundation is set, focus moves to UI consistency, performance, and compatibility across different OS versions and screen sizes. Robust state management, careful networking, and dependable analytics/crash reporting simplify maintenance and iteration after launching on Google Play.