This is a simple app to help users register their complaints, view and track them and the admin can view the complaints and update the status.
This app has expanding and colapsing Toolbar in the homeActivity.
Technology used for back-end: i have used firebase real-time database for storing data of users and complaints, firebase storage to store images, firebase authentication for login.
I will be adding notification,profile image for users and material design soon.
Few screenshots are here: