Starting Android app development with a well-defined product goal and awareness of device variety sets the foundation. Outlining the MVP, choosing an architecture, and mapping key user paths early helps maintain focus for the initial release and minimizes changes as the app expands.

Once the core is established, focus moves to UI uniformity, performance, and compatibility across different OS versions and device sizes. Robust state management, careful networking, and dependable analytics/crash reporting simplify maintenance and iteration after deployment on Google Play.