At last a way to check the display acuracy with some confidence. I use an app called screen balance with it to make the fine adjustmentd and its really useful. Another reviewer asked why gamma 2.2 is the number used. When video started out it was displayed on crt, cathode ray tube. It didnt have a linear brightness response relative to what was input to it. It was determined that rather than putiing correction circuits in millions of receivers it made sense to do it at the relatively few sources, studio cameras. Now we have new display devices with linear gamma but we modify the display devices to emulate the crt standard. That was to ensure a smooth change over. In the future something else will be worked out.
Great tool One of the most complete set of test screens I have seen. Although I'm not sure if gamma test pages are rendered correctly on all devices.
Good app I barely use it but it does a good job of what it should.
Fix me Thank you looks great
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It easily detects problems and it works
* Android 7.1 release (Nougat)
* Round icon for Pixel launcher
* Smoother app start
* Bug fixes
Everything about touching your device. If you like touching this app is for you.