Key Mapper

Your Physical Buttons, Now Fully Programmable

Forget the stock Android limitations. Key Mapper transforms every physical button on your device—volume keys, navigation buttons, even the Bixby button—into a powerful shortcut launcher. No root required. If you've ever wished for a dedicated camera button, a one-tap flashlight toggle, or a way to skip tracks without looking at your screen, this is the app that delivers that control. It solves the fundamental problem of wasted hardware, turning your phone into a tool that bends to your workflow, not the other way around.

Core Functionality: Remap Anything, Trigger Anything

Key Mapper provides a clean, two-panel interface: a list of your physical keys on the left, and their assigned actions on the right. The core mechanic is simple—select a key, then define what happens when you press it once, double-press it, or long-press it. The real power lies in the action library.

• System Actions: Launch any app, open the quick settings panel, toggle Wi‑Fi or Bluetooth, adjust screen brightness, take a screenshot, or simulate a home button press.
• Media Controls: Play/pause music, skip to next/previous track, change volume by a precise percentage, or activate a voice assistant.
• Accessibility Shortcuts: Trigger TalkBack, Select to Speak, or Magnification gestures instantly.
• Custom Intents: Advanced users can send arbitrary Android intents to trigger Tasker profiles, automate smart home devices, or control third‑party apps with specific parameters.
• Key Chords: Combine two button presses (e.g., Volume Down + Power) to execute a single action—perfect for launching your most-used app without unlocking the phone.

The app includes a built-in key detection test to verify your hardware registers presses correctly. A per-key profile system lets you assign different actions based on whether the screen is on, off, in landscape mode, or connected to a specific Bluetooth device (like a car kit).

Key Advantages Over Stock or Root-Based Solutions

• No Root Required: Works on any Android 8.0+ device using the Accessibility Service API. The setup is a single permission grant—no bootloader unlocking, no custom ROMs.
• Battery-Optimized Background Service: The detection engine runs with minimal overhead. You can set a per-key delay (50ms to 500ms) to prevent accidental triggers while maintaining instant response.
• Visual Feedback: On-screen overlay shows exactly which key you pressed and what action was executed. Disable it after setup for a completely invisible experience.
• Backup & Restore: Export your entire key mapping configuration as a JSON file. Share it with other devices or restore after a factory reset in seconds.
• Constant Updates: Developer sds100 releases monthly updates with new action types, bug fixes, and compatibility patches for the latest Android versions.

Download Mobile App Now

Stop ignoring the physical buttons on your phone. Install Key Mapper and turn every press into a productive action—whether you're driving, listening to music, or just want to reach your favorite app faster.

Technical Disclaimer

This app uses the Accessibility Service API to detect physical button presses and execute remapped actions. No user data is collected, transmitted, or stored. Requires Android 8.0 (API level 26) or higher. An active internet connection is required only for initial download and optional backup sync. In-app purchases are available for premium action types (e.g., custom intents, key chords). Age rating: 3+ (no mature content). Data usage: negligible (background service only).