Key Mapper for Android

Quick summary

Key Mapper is a free Android utility from sds100 that lets you reassign the behavior of physical hardware keys on phones and tablets. Instead of their default actions, buttons can be given shortcuts or more complex tasks so a single press can launch features or trigger automation.

Core capabilities

• Create multi-press or combination Triggers (use several button presses together or in sequence to expand what your keys can do).
• Paste predefined text snippets via a hardware key press.
• Emulate taps and swipe gestures on the screen when a button is pressed.
• Start apps immediately by mapping them to a physical button.

External device support

One of Key Mapper’s strengths is recognizing input from external peripherals connected over Bluetooth, for example wireless keyboards. This lets you reuse those keys as quick-access controls for apps and actions on your mobile device.

Advanced notes and restrictions

• Only real, physical buttons are supported — on-screen soft keys and gestures aren’t remappable.
• Some higher-level operations may require root privileges to function properly; check the specific action’s requirements before relying on it.
• The app aims to be straightforward and user-friendly, but more advanced setups (like chained triggers) may take a little experimenting.

Final thoughts

Overall, Key Mapper provides a flexible way to make better use of your device’s hardware buttons. It’s versatile, works with connected hardware, and supports a variety of actions — just be mindful of the physical-button limitation and any root-only features.