Rafter Calculator

I've written similar programs myself over the years using excel. Love what you've done. Always wanted to write something more phone friendly but never got around to it. Now there is no need. You might consider adding shortening for rafters going down a hip or valley. You would need to offer options for rafter centers. Most common would 450, 600, 900 & 1200 in metric but you could write to suit user entry.

This app is good, however, after using it today it was obvious that the app does not remove the Ridge beam thickness when calculating rafter length. However once I had worked this out the rafters sat perfectly where they should have. I will use it again, but will need to remember this detail in future.

Work perfectly to me, I'm not roofer, today I was built first roof, I cut all angles follow app and was perfect. I use 50x200 timber where tiny angle mist meen big gap, between Ridge and rafter, but was perfect. Just be great some improvements I have no idea how is calling all roof part, if be more pictures with explanations what is hip, valley pich and other will great to know when I cut how is calling. Thank you very much.

App info doesn't fit on the screen properly (tablet running 4.0.1). Unable to properly see input boxes or info. Could to with some help tutorial for none trade people (DIYers). For those of you moaning about lack of feet / inches - join the rest of the engineering world.

Only problem I found is works with meters and mm I use inches, could not find how to change it from metric to inches. Some one know how?

Needs and option for imperial and an option to enter roof slope not just angle in degrees its annoying having to leave the app for conversions.

The app doesn't give you the option for inches or feets

It will not let you try it without paying to have it calculated in inches

How do you switch from meter to feet

Simple and straight to the point. Even an amateur should be able to pick this up

App Inventor FTW! Thanks so much for publishing this for free

Would be nice to know it's metric and apparently can't be changed

Fantastic app takes the hard work out of roofing

Not accurate

Works as a charm.

Very useful and quick.

Its the best

Greatest app

Helpful

The whole thing is metric, not that I don't know how to convert, I would just rather not have to convert

Can't convert from metric to SAE.

No direction on how to use

Thanks for such a gift.

I would like it if it has the option to do it on inches

Design

Carpenter

Surely the rise (r) is measured from top of wallplate to the top of the ridge ?(r) seems to be measured on a 2 3rds marking line that dosent give you total rise?

Great app for speed, it complements existing roof knowledge perfectly, saving time on setting out. Good stuff!

Really like the way the app is laid out but needs to be in both metric and inches.

Useful app but what is it with the android icon? Looks terrible.

Great app for quick and precise roofing measurements. Great job

Fantastic

Would like an option for feet and inches!

Needs Inches and feet

Good