Plumbline Studio

This update sharpens the interface: the iPad layout now uses a centered, comfortable reading width instead of stretching edge to edge, plus small display fixes. iPhone is unchanged.

What's New - Version 1.1 Concrete Calculator - Compute exact cubic yards, cubic feet, and cubic meters for five pour shapes: rectangular slabs and pads, wall footings, round columns, tube forms (Sonotube), and stair step-blocks. Shows bag counts (60 lb or 80 lb bags at Quikrete-published yields), ready-mix cost range, and a quick-reference card with typical slab/footing/column specifications including IRC R403.1 footing minimums. Angle Math - A dedicated arithmetic tool for deriving angles from a known measurement: complement (90 A), supplement (180 A), bisect (A 2), double (A 2), A + B, A B, reflex complement (360 A), and A in radians. Capture Angle A or B live from the device's inclinometer with a one-tap lock, or type values manually. Preset buttons for 22.5, 30, 38, 45, 52, 60, and 90. Tap any result to copy it to the clipboard. Real Flatness Scan - The surface flatness scanner now uses the device's accelerometer to measure actual surface deviation as you slide the phone in an S-pattern. Deviations are mapped to a 96 heatmap (green = flat, red = dip, brass = hump) with live peak, valley, and RMS readings in millimeters. Previously this was an animated demo with no real measurement.