KeyStarButton Mapper
Buttons, reimagined.
Map volume, power, and navigation buttons to your own shortcuts. Add up to ten actions per button, with different actions for different apps.
Explore KeyStar
Android 8 or laterVersion 2.01
Your buttons.
Your rules.
Map your hardware and S Pen buttons to the things you do most.
Volume Up · Single Press
Play / Pause
Control your music with a single press.
Complete customisation.
PenStarS Pen Button Mapper
Air Actions, wherever.
Give S Pen clicks and Air Actions a purpose in the apps you use. Create collections of gesture actions for one app or a group of apps.
Explore PenStar
Android 8.1 or laterVersion 2.51
Guides
See all guidesHow to map volume buttons on Android
Use KeyStar to turn a volume-button press into a music control, torch shortcut, or another action, without root.
4 min readRead guide
How to map the power button on Android
Assign media controls, the torch, an app, or a Tasker task to your Android power button with KeyStar.
4 min readRead guide
How to map S Pen buttons and Air Actions
Use PenStar to assign your own actions to S Pen clicks and gestures, including in apps without built-in Air Action support.
5 min readRead guide
Three steps to getting more from your buttons.
Both apps work without root. Setup supports Shizuku, ADB, or wireless debugging, with help available along the way.
Read the setup guideDownload an app
Choose KeyStar for hardware buttons or PenStar for S Pen buttons.
Grant permissions
Follow the app's setup instructions to grant the permissions needed for your mappings.
Start mapping
Choose a button or gesture, assign an action, and make it yours.
A little help goes a long way.
Find setup guides, frequently asked questions, and troubleshooting tips in the support page.