Wake or lock your phone with a simple double tap on screen!
https://play.google.com/store/apps/details?id=com.jamworks.knockz
With KnockOn you can easily wake or lock your phone with a simple double tap on screen!
MAIN FEATURES:
• Tap to lock your phone
• Tap to wake your phone (OLED displays only!)
• Both features can be activated separately
• Set up a sleep time to reduce power consumption
• Customize double tap speed
• No annoying ads!