Starting Android app development with a well-defined goal and awareness of device variety sets the foundation. Outlining the MVP, choosing an architecture, and mapping key user journeys early keeps the initial release focused and minimizes rework as the app evolves.

Once the foundation is established, focus moves to UI uniformity, performance, and ensuring 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.