Square app will allow one to measure roof area for square footage. Best results are to do point to point squares take the length and width of each side and multiply on calculator this will give you square footage. IE. 10ft x 10 ft =100 sq ft, and in roofing terms that's 1 square.
What's new in version 1.02
Bug fixed occurring while searching place. And Point to point distance calculation added.
ReleaseOctober 18, 2014
Date AddedFebruary 17, 2014
Additional RequirementsCompatible with iPhone 4. iTunes account required.