Key Master

Key Master makes it easy to map custom actions to your volume buttons, home button, back and recent apps keys. Remap your buttons to launch any app, shortcut or custom action.

Assign custom actions to single presses, double taps and long presses of your phone's hardware buttons. Root is not required.

Key Master can remap physical or capacitive keys and buttons, such as volume buttons, the home button on Samsung Galaxy devices, the camera button on Sony devices, and the capacitive home, back and recent apps keys found on many devices by ASUS, HTC, OnePlus, Xiaomi and other manufacturers. Best of all, Key Master does not require root.

A few examples of keymapping you can do with Key Master:
-press volume down to open camera app
-press your home button to launch your favorite app
-long press your home button to take screenshot
-and much more, the possibilities are endless

Buttons supported:
-Home
-Back
-Recent apps or Menu
-Volume up
-Volume down
-Bixby button on Samsung S8/S8+ (blocked by Samsung on some firmwares)

Notes:
-Key Master does not work with onscreen buttons (such as soft keys or the navigation bar) and the power button.
-Key Master does not work while the screen is off.
-The options shown in the app depend on the buttons available on your phone.

If you have any question or something to improve this apps, please help us by sending mail to developer.easy4u@gmail.com