Construction Buddy Pro

Construction Buddy has calculators for many construction tasks. Whether you want a new floor, need to pour some concrete, have to construct a ceiling or drywall or want to know the requirements for a heating or ventilation system, this app can calculate all your requirements. Many other calculators are available, and you can design your floor plans and walls as you want by drawing them on your screen, then calculate the materials needed for what you want to do.
Advantages over the ad supported version are more calculators and the ability to add doors and windows to your sketches.