Product tour

Any button.
Any action.

Turn the volume rocker, a keyboard, a remote, a pedal or a controller into shortcuts for media, the flashlight, screenshots, apps and text. No ads, no account.

Get it on Google Play Features →

Free to try · Pro once or yearly · Phone & tablet

Actions

System, media, apps
and text.

Go back or home, open recent apps or the last app, take a screenshot, lock the screen, skip a track, change the volume, switch on the flashlight, open an app or a settings panel, or type a snippet into the field you are in.

Global actions on the Android versions that have them
Media control for whatever app is playing
Brightness, rotation, ringer and Do Not Disturb, asked only when you use them

Triggers

Short, long, double,
combos and sequences.

One key can do three things: a short press, a long press and a double press. Hold two or three keys together for a combo, or press up to four in a row for a sequence. Keep the key's normal job too if you like.

Long press from 300 to 1500 ms, double press window from 150 to 600 ms
Volume, brightness and seeking repeat while held, at most 10 per second
Keys without a normal code matched by scan code

Profiles

Different keys
in different apps.

Everywhere mappings work in every app. An app profile changes what keys do while that app is in front, and the free "Off in these apps" list leaves the apps you choose alone.

App profiles switch by themselves
Conditions: lock screen, charging, headphones, a device, time, orientation, media
Off in these apps, free

Key tester

See every key
Android sends.

Not sure what a button does? The key tester shows the key code, scan code, device and how long you held it, for any key that reaches apps.

Codes, scan codes and devices
Hold time for each press
Mappings pause while you test

Privacy

Your presses
stay on your phone.

KeyRelay handles key presses in memory and never logs them. It stores only the mappings you save, has no account, no ads and no analytics, and backs up to a file you keep.