KeyStar: Button Mapper gives Samsung users total command over device buttons, allowing up to 10 actions per button and context-based actions across apps. It supports soft keys and Tasker integration, and runs without root for flexible automation. With 100+ total downloads and 82 in the last 30 days, it’s a growing tool in the TOOLS category for power users.
Pros & Cons
No root required to remap buttons
Up to 10 actions per button for deep customization
Context-aware actions that change per app
Tasker integration for advanced automation and on-the-fly hotswaps
Requires multiple permissions (Notifications, Read Logs via ADB, Accessibility) to function fully, which may add setup friction
About KeyStar: Button Mapper
KeyStar: Button Mapper is a tools app developed by Enrique Anthony Galea.
Download Statistics
KeyStar: Button Mapper has been downloaded 420 times. In the last 30 days, the app was downloaded 82 times.
User Ratings
The app has no ratings yet.
App Information
KeyStar: Button Mapper is FREE to download. The last update was on April 2, 2026.
Technical Requirements
The app has a content rating of Everyone. The app has been available on Google Play April 2026.
Description
With KeyStar, you can take total command of your Samsung device's buttons to perform the exact actions you need.
Add up to 10 actions for each button. Not enough? Add contexts to perform a different set of actions based on the currently open app.
Still not enough? Combine KeyStar with Tasker to create your own actions and hotswap configurations on the fly based on your own rules.
Remapping works always, even with the screen and Always On Display turned off. No root needed.
Soft keys, such as home, back, and recents, are also supported. KeyStar allows you to add your own actions on top of the existing functions provided by these keys.
The engine parameters can be fine tuned to your liking. You can adjust the delays for short presses, long presses, and even customise the volume change speed when holding down the volume buttons.
Supported keys: • Volume Up • Volume Down • Side Key • Home • Back • Recents
Supported triggers: • Single • Double • Triple • Quadruple • Quintuple • Single Long • Double Long • Triple Long • Quadruple Long • Quintuple Long
Supported actions: • Last App • Open App • Auto Rotate (Enable / Disable / Toggle) • Sound Mode (Sound / Vibrate / Silent / Cycle) • Do Not Disturb (Enable / Disable / Toggle) • Media Control (Play / Pause / Toggle / Next / Previous / Lower Volume / Raise Volume) • Torch (Enable / Disable / Toggle) • Digital Assistant • System (Back / Home / Recents / Notifications / Quick Settings / Power Dialog / Lock Screen / Screenshot) • Touch Sequence (Tap / Swipe / Combination) • Tasker Task
For advanced users, KeyStar also has Tasker plugin support. For example, you can hotswap configurations on the fly based on your own logic, and more.
KeyStar uses the following permissions: • Notifications: Required. This is required to show you when the app is running in the background and to warn you of any issues that prevent actions from working properly. • Read Logs: Required. This is required to detect when an Air Action gesture has been performed. This permission must be granted with ADB. • Accessibility: Required. This is required to track which app is currently in the foreground, perform the System action, and perform the Touch Sequence action. • Appear on Top: Optional. This is required to perform the Open App and Last App actions. • Write Settings: Optional. This is required to perform the Auto Rotate action. • Do Not Disturb: Optional. This is required to perform the Sound Mode and Do Not Disturb actions. • Run Tasker Tasks: Optional. This is required to perform the Tasker Task action. • Ignore Battery Optimisations: Optional. This is required if you find that your system is killing KeyStar while it runs in the background.
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Great mew way to make my phone work the way I want it to. Developer is very helpful and responsive!
★★★★★Scott· Apr 23, 2026
Works well, tons of options and features. Setup was simple with some minor hiccups. This is what Register should've been, you've outdone Samsung by a long shot. There should be a trial period before you have to pay for the features, even if it was just a day to make sure everything works. Not a bad price for the features provided though. Tip for anyone, if you get the "Bixby is disabled" toast when using side button, use Register to remap the button to do nothing
Google Play Rankings for KeyStar: Button Mapper
This app is not ranked
Technologies used by KeyStar: Button Mapper
KeyStar: Button Mapper is requesting 0 permissions and is using 17 libraries.
Show details
Trust & Safety: Trust/Safety: KeyStar states it does not collect any data. Core features rely on standard permissions (Notifications, Read Logs requiring ADB, Accessibility). Optional permissions (Appear on Top, Write Settings, Do Not Disturb, Run Tasker Tasks) enable extended actions. Read Logs must be granted with ADB.
Each subscription will automatically renew 3 days before the expiration date for
the same time period. Subscriptions can be cancelled at any time before the renewal.
