The application contains the following features
1. Flexible keyboard styles that has facility for left and right hand users. If your hands feel tired on a 4.7" inch screen, then you can disable stretching that will make the it more reachable
2. Placement of ads where the user can not reach accidentally.
3. wide screen space for the user to type query
4. Advanced settings control page that has options for clearing cache if your application is behaving slower
5. calculation in deg and radians allowed
6. supports sin, cos, tan, cbrt, sqrt, abs, power, e^x, x2, x3 along with standard simple calculator func.
7. Has history function that remembers calculation that you have every typed during that session. You can then add the result to the current query
8. support backspace and clear functions