iPhone Screenshots


※To use this application, it is required to read disclaimers completely and agree to it.

*Easy to use!
You can measure belt tension with your iPhone.No additional devices or complicated calculation are necessary.

*Easy to see!
Belt tension is measured digitally by a sound wave, and numerical outputs are plain to comprehend.

*Easy to apply!
You can choose your language, units of the output and microphone sensitivity depending on the situation.

*And free!
Smart Tension is a free application.
Try out our new App for quick and easy tension measurement!

What’s New

Version 1.3

Add the calibration button to adjust input level automatically for the case of sound pressure level meter scaling out without any signal.

Ratings and Reviews

2.0 out of 5
1 Rating

1 Rating

robert003003 ,

Seems like a good product

Have a RG 80 and was going to check the tension. So like anyone because I didn’t know the specifications to tighten it I read the manual. Download this, okay, select other, okay, select timing belt, okay, select GigaTorque GX, okay, select G14M, okay, select 37, okay, input 22.375 in. Error. Range of 7-21 in. Please correct this please

App Privacy

The developer, Mitsuboshi Belting Ltd., has not provided details about its privacy practices and handling of data to Apple.

No Details Provided

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


Mitsuboshi Belting Ltd.
4.4 MB

Requires iOS 7.0 or later. Compatible with iPhone, iPad, and iPod touch.


English, Japanese

Age Rating


  • Family Sharing

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

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