01
Caps Lock went unused
Put the unused key and its LED to work
One unused keyFewer daily hassles
Turn Caps Lock into your Media / Function switch
macOS 14 or later
Media controls
LED ON
Why Capswitch
How Caps Lock became a switch
02
Holding Fn for the other F1–F12 action was tedious
Stop holding Fn when choosing between media controls and function keys
Fn + F1–F12
03
Caps Lock became the switch
Switch with one press and see the state on the LED
Keep Caps Lock
You can still use Caps Lock
Tap the key the configured number of times to toggle Caps Lock instead of running the selected mode.
SetChoose 3, 4, or 5 taps
→DoTap that many times
→ResultCaps Lock ON / OFF
More than Function switching
Choose one of 10 roles
Function key switching
2 statesSwitch F1–F12 between media and function keys
Microphone mute
2 statesMute or unmute the microphone
Appearance
2 statesSwitch between Light and Dark
Prevent sleep
2 statesStart or stop sleep prevention
Speaker mute
2 statesMute or unmute audio output
Volume controller
ContinuousRepeated taps raise volume; hold lowers it
Hold to lower by 5% steps
Audio output
MultipleCycle through selected output devices
Input source
MultipleSwitch between selected input sources
Timer
TimeStart, pause, and adjust a countdown
While stopped: repeat +1 min / hold −1 min
Shortcut
CustomAssign actions to each press pattern
Hold can run once or continuously
Physical feedback
See the state on the LED
Steady light, pulse count, and pulse speed communicate different states.
State typeLED patternUsed by
State type2 statesLED patternOn / offUsed byFunction keys, mute, appearance
State typeMultiple statesLED pattern1–n short pulses → long pauseUsed byAudio output, input source
State typeContinuous valueLED patternFaster pulses for higher valuesUsed byVolume
State typeTime remainingLED patternFaster pulses near the endUsed byTimer
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