TrueRule: Feet Inch Calculator

Add 12' 4-1/2" to 3' 9-3/4" and get 16' 2-1/4". No converting to decimals, no converting back, no place to drop a sixteenth. TrueRule is a feet-inch-fraction calculator for people who cut material. It works the way the calculator on your belt works, with real Feet and Inch keys, and it does the arithmetic in exact fractions so a hundred operations in a row never drift. WHAT IT DOES Feet, inches and fractions. Add, subtract, multiply, divide. Parentheses, so you can write the whole calculation the way you think it. Precision from 1/2 down to 1/32, and when a number cannot be written at your precision it says so instead of rounding in silence. Every result in five units at once. Feet-inches, decimal feet, decimal inches, millimetres, metres. Tap one and the display changes; the measurement does not. The tape remembers. Every calculation is saved under a job, with the expression that produced it. Label a line, tap it to bring it back, email the whole job as a PDF or a CSV. Eight trade calculators. Stairs: rise, run, riser height, tread depth, stringer, angle, and a warning when a riser is taller than the IRC limit, cited on screen. Roof: pitch, common rafter, hip and valley, plumb and seat cut. Concrete in cubic yards and bags. Tile, drywall, paint, lumber and board feet, area of any shape. BUILT FOR A JOB SITE Every key is at least 60 points across, so it works with gloves on. There is a left-hand layout. It works with no signal at all, because nothing in it touches a network. BUY IT ONCE One payment. It is yours, on every device you sign in with, for as long as you have it. No subscription, no renewal, no ads, and no account to create. The free version includes four of the eight trade calculators, ten lines of tape and three jobs. The one-time purchase unlocks the rest. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://truerule-app.web.app/privacy