Starting with a well-defined goal for the product and awareness of the wide range of devices. Defining the MVP, choosing an architecture, and outlining key user journeys early helps keep the initial release focused and minimizes rework as the app evolves.

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