Beginning with extensive research into the market scene, trends, competition, and the basic layout of the app, developers then begin to build the wireframe and features to lay on top of that. Marketing is an ongoing process, and user engagement is a crucial aspect of the whole process. Before launch, the app needs thorough testing and tweaking where needed. After the launch, app maintenance, timely updates, social media interaction with users, etc., are some of the post-launch activities relating to the process. You can scale your business as time goes.