BuildersCalcsRooftop is a handy, free-to-download app that provides you with a selection of roofing-related measurements and tools.

If you're looking to cut a roof in order to build a new house, you're at the right place.

The program can be used in two different ways. You can enter the relevant dimensions into the app and get an immediate response with all the necessary roofing-related information. Or, you can use the built-in measurement tool to mark out a certain angle and get the exact roof length.

You can also set the angle for the roofing and get an immediate response with all the necessary measurements.

The program also includes a comprehensive help section for each section.