Sonar Utility 4+

Mark Carlotto

Designed for iPhone

    • $1.99

iPhone Screenshots


Sonar Utility uses sound to measure distance. But it is so much more than a ruler. It is the first iPhone app for generating 360° sonic images that show surfaces like walls, obstructions, openings (e.g., doorways), and other features. Use it to "see" in the dark. Sonar Utility is also a thermometer that estimates the ambient temperature using the physics of sound.

Note: For best results this app should be used in quiet environments. Works best with older iPhones (e.g., iPhone 4s).


Waveform: 5000-20000 Hz noise modulated "chirp"
Sampling Frequency: 44100 Hz (0.3 inch accuracy at 72°F)
Range: 9 inches to 30 feet (0.23 - 9.14 meters)

Go to our web site for more information.

What’s New

Version 1.5

Updated for new iOS versions.

Ratings and Reviews

1.0 out of 5
2 Ratings

2 Ratings

Darmitage ,

Doesn’t work

I would suggest that you either take this app down or make it free. It does not seem to work at all.

Drakonmaster ,

Doesn't work

It can't tell the difference between one foot or ten.

Deceptishawn ,

Does not work.

Should be considered for entertainment purposes only. Will not actually work, even after patiently following all instructions in a perfect environment.

App Privacy

The developer, Mark Carlotto, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

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