Easy to use and understand inputs and results in either decimals or fractions. Rich support for U.S., imperial, and metric measurements. Built-in calculator with support for ft/in and fractions. Current Calculators include: Business * 28 calculators for loans, pricing, travel costs, and more. Concrete & Paving * 11 calculators for asphalt, concrete, paver bricks, and more. Electrical * 5 different calculators Floors, Walls & Ceilings * 13 calculators for carpet, drywall, wall covering, tile, paint, and more. Foundations * 33 calculators for foundations, soil, grading, rebar, etc. Framing * 19 calculators for balusters, joists, studs, siding, stairs, and more Heating & A/C * 8 calculators for airflow, attics, fans, air conditions, insulation... Hours Estimates * Effort Factor * Over 55 different estimators for: * Carpentry - finish, siding, stairs, walls, ... * Concrete - blocks, bricks, concrete, reinforcement, tile, ... * Doors & Windows - garage doors, glass, metal, windows, wood, ... * Finishes - carpet, paint, wood floors, stucco, plaster, tile, .... * Roofing - roofing, sheathing, sheet metal, ... * Site Work - concrete demolition, excavation, stumps, trees, forms, culverts, landscape, ... Landscape & Yard * 15 calculators for fence, fertilizer, mulch, seeds, trees, mowing and more. Masonry * 8 calculators for walls, joints, core filling,... Miscellaneous * Area, Volume & Angle - 25 calculators for a variety of shapes. * Conversions - 26 different unit conversions * Glossary - Over 370 terms * 11 calculators for tanks, pulleys, weather, wrenches, ... Roof Framing and Roofing * 22 calculators for rafters, ridges, gables, pitch, trusses, shingles and more Wood & Materials * 20 calculators for lumber, nails, plywood, caulking, etc. You may also purchase add-on packs within the app. There are currently two add-ons available: Project Dates & Times * Over 35 calculators help you understand and manage project timing and deadlines. Sensor Angle * A set of 10 calculators that use the angle sensing ability of your iPhone or iPad to easily and accurate measure an angle and calculate a variety of other angles and lengths. Map Estimator * Estimate the distance and area using a map. Great for estimating size of yard, length of fence, etc. If there's a calculator you'd like to see added, visit our website and send us an email.