CutPlanner: Site datums, tolerance chains, cut optimization, and job evidence. - Establish the site datum, reference face, units, and calibration state - Capture chained measurements with direction and tolerance - Nest cuts against actual stock and preserve offcut candidates - Sequence checks, fasteners, shims, and installation holds - Issue a cut list and signed measurement report with open exceptions

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.

Plumbline Studio 2.0 — a big pro upgrade to the Pro Calc suite, still 100% offline. 11 new calculators, each with PDF/material-list export where it counts: • Fraction Calculator & converter: exact feet-inch-sixteenths add, subtract, multiply, divide. • IRC Span Tables: joist & rafter max clear spans by size, species/grade, and spacing, with a smallest-size recommender. • Baluster Spacing under the 4" sphere rule, with a mark-out list. • Tile & Flooring layout with waste and sliver detection. • Coverage estimator for paint and materials. • On-Center Layout (stud/joist marks), Roof Pitch (common + hip/valley), Footing Planner, Drywall, Deck Boards, and Insulation R-value estimators. All math is exact and unit-tested. No account, no network — everything stays on your device.

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.

Plumbline Studio 1.2 adds a Triangle Solver (right, SSS, SAS, ASA, AAS with a live diagram), a Board-Foot Calculator with a 28-species price guide and waste factor, a real PDF project report, and CSV export. Fully offline — no account, no ads, no tracking.

Updated the app icon with a premium detailed design and refreshed the App Store build.