iPhone Screenshots


An essential tool for arborists that lets you easily estimate green log weight by entering tree species, log width and length.

● Weights for 156 North American tree species listed.
● Imperial and Metric modes.
● Includes integrated Green Log Weight Chart.
● Trusted results based on US Forest Service data.

What’s New

Version 1.1

● Adds Feet Ruler option.

Ratings and Reviews

4.2 out of 5
5 Ratings

5 Ratings

Uncle Moustache ,

Almost perfect.

Simple and good. Nothing fancy or useless
Could use more species, though. Mulberry is not on the list and there is lots of that around here.
Would be nice to be able to see the species list by weight.

billym92 ,

Excellent tool for arborists

If you rig wood and you want to become more familiar with the weight of different species of trees this app will help. You won’t be an overnight success but you’ll have one more tool to help in situations you’re unsure of.

Arthurvmk ,

Does exactly what it says

Nice clean interface. Easy to use.

Hardest part is correctly measuring the diameter of the log halfway between its ends.

Next challenge is determining if the log is heavier or lighter than a “standard” green log of the selected species.

But those are judgement items that no app is likely to define for you.

App Privacy

The developer, Breathing Zone, 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.


Breathing Zone Limited
7.8 MB

Requires iOS 11.0 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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