Truck Scale Calculator is a utility app designed to assist truck drivers in analyzing the weights of their axles. It is designed for rigs which are either: 1) 3 axle sets, including steers, drives, and tandems; or, 2) 4 axle sets, including steers, drives, and two different spread axles. It is also designed to input the scale readings from either a short platform or long platform scale. For long scales, it can compute for either "scaling on" or "scaling off" - i.e., gross weight first or last.

Once the readings are entered, the app calculates the weights on each axle set and displays them in a summary screen. Weights that exceed the predefined limits (which can be adjusted in settings) are displayed in red. Then, the user can adjust the fifth wheel toward the front or back, and the steer axle and drive axles weights will be adjusted according to a predefined amount which can be adjusted by the user. For tandem rigs, the user can adjust the tandem slide toward the front or back as well.

What’s New

Version 1.4

This app has been updated by Apple to display the Apple Watch app icon.

Bug fixes: 1) crash on FRONT or BACK buttons because of space in number format, 2) crash on share controller iPad.

Ratings and Reviews

3.5 out of 5
35 Ratings

35 Ratings

Diesel7577 ,

Decent app

The app needs to expand for triples and quads. Plus trailer length would be good.

Ditch5927 ,

You need this app!

Take the easiest and most accurate way to get your weights legal!
No more scrabbling around for paper & pen (and calculator) with this app, just enter your 1st scale ticket 🎫 weights and hit ‘calculate’ get the results right there, see the results of sliding tandems or 5th wheel forward or back by a single or multiple holes.
Simple, accurate and a real time saver, especially if you want to go through the routine of scaling, parking, going inside to get your ticket.
Use in conjunction with Cat Scale WeighMyTruck and you’re on your legal way in a fraction of the time!

Developer Response ,

Wow, man. Thank you. I don’t think it’s that good. Did you get the right app? Thanks very much.

IcemanArrives1 ,

Unclear Pin Movement

I like the app. Easy to use with one exception. If your pin is in home #5 and the app says minus 3. Does that mean move the on forward or back? Re-label the tabs from plus and minus to forward and back. Thx

App Privacy

The developer, Bruce Fraser, 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.


  • Family Sharing

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

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