I have used this app on all the android devices I have ever purchased/owned and this app is surely God when it comes to testing out your screens. I recommend this app for both LCD and AMOLED screens. Amazing app made by an amazing developer!
Khshahid _(USER)HARDLY ANNOUNCED THAT SYNC AND INFORMATION TRANSFER FROM THIS SAMSUNG GLAXY J7 PRIME IN THIS PHONE MUST SHOULD BE STRONGLY STOPPED AND CLOSED FOR PERMANENTLY.
Many different test patterns and fixes, it's awesome
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.
* Bug fixes
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