Key Mapper is a free utility app for mobile devices developed by sds100. It is a remapping tool that allows users to change the function of the physical hardware button on their devices. With it, they enable quick access-like functions for things like launching apps or shortcuts using just a simple press.

Remap your buttons

Key Mapper is a multi-functional tool. Some of the things you can set up with it include launching an app, simulating screen taps and gestures, and even pasting text. You can also create Triggers which are a combination of button presses to extend its functionality even further.

Arguably, this app's best feature is it can work with external devices connected to your smartphone or tablet via Bluetooth, such as a keyboard. However, it's important to note that this tool only supports physical buttons. Additionally, some special actions require root access to work properly, so keep that in mind.

Multi-function buttons

In summary, Key Mapper is a simple yet robust tool that lets you do all kinds of things with your device's physical buttons. It's intuitive to use, supports various actions, and can even work with connected external devices. Just be aware of the noted considerations, and you're good to go.