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

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