Starting with a well-defined product objective and awareness of device fragmentation is key to Android app development. By outlining the MVP, choosing an architecture, and mapping essential user journeys early, you keep the initial release focused and minimize rework as the app evolves.

With the foundation set, focus moves to a consistent UI, 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 publishing on Google Play.