iPhone Screenshots


Motionless Detector performs the same alarm function as the firefighter's PASS device. When a firefighter goes into a hazardous location, their PASS device will sound an alarm if they stop moving due to injury or incapacitation. This app should never be used for any official firefighting business but it is an educational tool that some may find interesting or useful to detect non-movement.

THIS APP DOES NOT REPLACE AN ACTUAL PASS DEVICE IN ANY WAY. It's not loud enough and the iPhone shouldn't be used as a safety device. Also, actual PASS devices have radio components that transmit alarm information to other units.

This app counts down from a customizable time limit (15 seconds by default) and when it reaches zero an alarm is sounded. To stop the alarm and reset the counter at any time, simply nudge the device over a threshold you specify (from a jolt to a nudge).

The uses of this app are quite varied but with several customizable preferences, it can be adapted to be a useful tool for measuring breaks during working out or a louder alarm for when the dryer is done. It requires a device with an external speaker to properly operate and the vibration function only works on devices that support it (iPhone).

If you find another use for this, have a question, comment, or concern please email me at gadgets@ericsalerno.com and I'll update this meta information.

Visit our website at http://www.unmotion.com for development information and news or follow me on twitter at @ericsalerno.

What’s New

Version 1.4

More internal tweaks of physics code.
Fixed very rare bug with corrupted saved settings.

Ratings and Reviews

3.3 out of 5
3 Ratings

3 Ratings

Wujifa ,

Nice as a movement reminder

I like this as a personal movement reminder. Possible improvement could be to add different sounds. I'd also like to use this when doing standing meditation. And have it play a nice sound when still or buzz if I move slightly. This would be a great improvement that would allow for other uses.

Domdomdomdom4 ,


Works perfect

Zarahi7 ,


SO stupid doesn't work at all


Salerno Labs LLC
720.6 KB

Requires iOS 4.1 or later. Compatible with iPhone, iPad, and iPod touch.



Age Rating


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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