AceScreen is described as 'Easy way to keep the screen of your Android device on. AceScreen prevents the Android device from going to sleep based on the current needs of the user. Simple and intuitive interface. Privacy friendly. Offered in over 50 languages' and is an app in the office & productivity category. There are four alternatives to AceScreen for Android and F-Droid. The best AceScreen alternative is KeepOn, which is both free and Open Source. Other great apps like AceScreen are No Sleep, Coffee: Keep Display Awake and Stay Awake!.
KeepOn allows you to keep your device's screen on for the desired duration and also allows you to return to the default settings automaticaly when the screen turns off.
Coffee allows you to keep the display awake without having to change the device settings. It can be toggled at various places:
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Keep your screen on when your device is running your GPS application, favorite remote control, playing a movie or slideshow, etc... Perfect to keep your screen on without dimming for application development. Your screen will never go back to sleep until you want it to...
