Mobile application proposal

Having trouble developing application with android studio?
Well here is my solution.
I try these app a month ago to develop a sample project of civil service exam reviewer. This project proposed to encourage student since they all depend on mobile tech. But as usual project has a scope and limitation so expected future errors are there.
So to develop this app i used AngularJS ionic and a firebase for data storage.
The application require a 4. Below android version and does not run to iOS device and windows. Mobile phone and internet connection required.

The application has a timer like to a actual civil service examination. And have the same category each exam based on research i make.
Pupose of this project is to prepare students to the actual examination and enhance the quality of taking exams online.

Features of the app.
Sound
Pause
Submit
Timer
Feedback comments
Rating stars

Client/user display and flow

Hope you like it.
Please support and comment!
God bless more power steemit!