● iOS Construction App
Every calculation a contractor needs.
20 tools, code-compliant, works offline. From stair risers to septic systems — get the right answer the first time.
20 tools, code-compliant, works offline. From stair risers to septic systems — get the right answer the first time.
Everything from code-compliant stair layouts to rebar schedules. No internet required.
Get code-compliant answers, not just numbers. Every result is checked against the relevant building code so you can build with confidence.
Every calculator outputs a complete bill of materials — quantities and estimated costs included. Take it straight to the lumber yard.
Every calculator is designed for real job-site conditions — not textbook examples.
Enter total rise and run, get risers, treads, stringer length, cut angle, and an IRC compliance check.
Full deck BOM from a single footprint input — boards, joists, posts, footings, hardware, and railing included.
Size a septic tank and drain field from bedrooms and soil perc rate. Code references included.
Footprint plus pitch gives you exact squares for shingles, underlayment, and ridge cap. Pro pack tool.
The Carpentry Pack adds framing, concrete, roof pitch, roof area, and board feet calculators — the tools carpenters, framers, and roofers reach for every day.
Get Contractor Calc Pro FreeOne-time purchase. No subscription.
Download free and start calculating. No account, no subscription, no internet required on the job.
Free download · Carpentry Pack available as one-time Pro upgrade