Use APKPure App
Get Greyscale old version APK for Android
Quickly switch grayscale mode for Super AMOLED to save power.
Before using this Application, you need to use "adb tools" to grant permission, copy below command and exec it on a PC.
adb shell pm grant com.fei_ke.greyscale android.permission.WRITE_SECURE_SETTINGS
About "adb tools": https://www.xda-developers.com/install-adb-windows-macos-linux/
Source code: https://github.com/fei-ke/Greyscale
What's New in the Latest Version 1.2
Last updated on Jul 7, 2018
Fixed FC on some device.
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