Contractor's Cheatsheet

100+ code-compliant calculators with Bluetooth laser & multimeter input, job-based project tracking, iCloud sync, PDF reports, and session logging.

100+ trade calculators with Bluetooth tool integration, project tracking, and iCloud sync — all backed by current NEC, IPC, IRC, and IFGC code tables. Contractor's Cheatsheet covers 8 trades in one app.

Bluetooth laser meters feed measurements directly into distance fields. Bluetooth multimeters stream live voltage and resistance readings for real-time verification. The Record Over Time feature catches sags, spikes, and intermittent faults you'd miss with a spot check.

Every calculation is automatically logged to the Session Tape — a searchable, timestamped record of your workday. Organize calculations by job with the Project system, add field notes, and generate PDF reports to hand off to your GC or email to the office. iCloud keeps projects in sync across all your devices.

ELECTRICAL — 15 calculators Wire sizing with NEC 310.16 ampacity. Conduit fill for EMT, PVC, RMC, FMC. Box fill per NEC 314.16. Service load calcs. Panel schedule builder with bus balancing. Motor FLC and OCP per NEC 430. Transformer/kVA. Ohm's law. Parallel resistance. Generator sizing. Solar estimating. Conduit bending with concentric cutback marks.

PLUMBING — 13 calculators DFU drain and vent sizing per IPC. Water supply with pressure zone analysis. Water heater sizing. Gas pipe sizing for NG and LP per IFGC 402.4 including multi-branch manifolds. Septic sizing. Pipe flow.

CARPENTRY — 26 calculators IRC stair layout. Rafter lengths with birdsmouth cuts. Wall framing counts. Deck boards, joists, railing. Roofing squares. Drywall sheets. Paint gallons. Tile and flooring with waste. Board feet. Concrete volume. Header sizing. Crown miter angles. Hip/valley factors. Siding. Fencing.

HVAC — 13 calculators Simplified Manual J. Duct sizing. MCA/MOP. Refrigerant line set charging. Airflow CFM. Temp rise/drop. ASHRAE 62.2 ventilation. Psychrometrics. Combustion air.

MASONRY — 10 calculators Block and brick estimating with mortar. Concrete for slabs, footings, walls, piers, columns. Rebar with lap splices. Post holes. Cure time. Retaining wall footing.

WELDING — 10 calculators Heat input. Preheat. Weld cost estimating. Gas usage. Carbon equivalent. Pressure vessel thickness.

ESTIMATING — 5 calculators Markup with tax. Profit/loss per job. Labor burden. Grade and slope. Volume.

CONVERTERS — 8 tools Feet-inch-fraction. Temp, pressure, flow, weight. Power cost. Bending reference.

WHAT SETS THIS APP APART · Bluetooth laser and multimeter input into any measurement field · Project tracking with notes, timestamps, and PDF report generation · Session tape — automatic calculation log, searchable by date and trade · AI trade assistant for code questions, material selection, and troubleshooting · iCloud sync across iPhone and iPad · NEC, IPC, IRC, IFGC code tables built in — not approximations · Works fully offline · No subscriptions, no ads, no account required