Custom Screen Rotation

The ideas is to create an application which is forcing the phone NOT to rotate unless the rotation has met the requirement. For example. If you rotate the phone at 45 degrees then phone will rotate the screen but if you rotate the phone at 40 degrees the phone will not rotate the screen. Do not force user to Rooting Droid to gain access, and do requirement to access special permission to user this application. I will not paid unless you have completed the whole project, I can test them or you may send a video proof. Need be compatible with at least Android V2 and later Here are the GUI features need to be included [CheckBox] Enable Screen Sensitivity 1. Rotate Degrees [Input Texbox] (Rotate current application screen if tilted by the custom degree) 2. Rotate Interval [Input TextBox] (Rotate the screen within this interval, if the user rotate the screen slower than the interval it will cancel the rotation.) 3. Free version will have advertisement every 30 minutes for 5 seconds. 4. Paid/Pro version will not have any advertisement.