I’ve done analysis on varieties of projects, have expertise in Android app development, have familiarity of Material design and have strong debugging skills. Combination of all these will help you to get desired output from your app.
The app you are looking for must have relevant question set, which keep customer engage during feedback process, also will provide you enough information, to take business decisions. I'm free to share my methodology of app development or any points you wish to share over chat.
I’ve divided this project in few milestones, so you can get updates on regular intervals and can share your feedback, so we can improve the app along the development.