To make the app work efficiently you should define basic goals and priorities. Note, that goals and tasks are not the same things. A goal is a final outcome, tasks are intermediate stages which lead to the goal.
Creating the WAM app interface, we defined the goal – to make the app easy and quick in search of any hobby group in the city. The main task, respectively, was to create the most user-friendly interface, so that the search would be fast and thorough, and the results would satisfy user’s needs.