Descriptions : With DisplayTester, you can test almost every aspect of your device's LCD / OLED screen. You can use Google Cast to test the display quality of your TV. It was developed to enable full screen tests also on devices with softkeys (hide the softkeys in ICS and higher, immersive mode in KitKat and higher)
Features :
+ Full support for Google Cast
+ Repair grape burning - noise (white, b / w, red, green, blue)
+ Color tests: contrast, gradient (stripe) and saturation tests
+ Gamma calibration tests (gray / red / green / blue)
+ Viewing angle tests (this is useless for OLED displays)
+ Color test with a large color range
+ Multi-touch test
+ Show performance tests
+ Fix burn-in - scrolling black and white bars
+ Real world images for reference and comparison
+ Pixel format & dithering tests
+ Test for integrated font styles
+ Manual DPI measurement
+ Color cards
+ Touchscreen dead center tester
+ System Fonts Tester
+ DIP / PX calculator
Required Android Versions : Jelly Bean [4.1–4.3.1] - KitKat [4.4–4.4.4] - Lollipop [5.0–5.0.2] - Marshmallow [6.0 - 6.0.1] - Nougat [7.0 – 7.1.1] - Oreo [8.0-8.1]