DisplayTester allows you to test almost every aspect of the LCD / OLED screen of your device. With Google Cast it is possible to test the display quality of your TV. It is designed to allow full screen testing also on devices with softkeys (hide softkeys in ICS and later, immersive mode in KitKat and later).
+ Full Google Cast support
+ Burn repair – noise
+ Gamma calibration tests
+ Viewing angle tests
+ Wide range color test
+ Multitouch test
+ Screen performance tests
+ Burn repair: black and white scroll bars
+ Pixel format and interpolation tests
+ Built-in font style test
+ Manual DPI measurement
+ Colored letters
+ Touchscreen neutral point tester
+ System source tester
+ DIP / PX Calculator

Supported Android
(4.1 and up)
Jelly Bean (4.1 – 4.3.1),KitKat (4.4 – 4.4.4),Lollipop (5.0 – 5.1.1),Marshmallow (6.0 – 6.0.1),Nougat (7.0 – 7.1.1),Oreo (8.0-8.1), Pie(9.0)