Download CutOnce - Builder's Calculator App V. 1.17.0
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CutOnce - Builder's Calculator App V. 1.17.0
by Verik Labs LLC
The construction calculator that generates stair and rafter PDF plans offline, on your phone. No signal, no account, no subscription. Feet and inches fraction math, code-checked stairs, rake wall stud - More Info...

Available Since: 2026-04-08
Developer: Verik Labs LLC
Seller: Verik Labs LLC
Price: 0 USD
Current version: 1.17.0
Last Updated: 2026-10-22

Ratings: 5 out of 5 stars.
Based on 6 reviews. (Rate/Review)
Genre: Utilities
Filesize: 13.84MB
IOS Bundle ID: com.veriklabsllc.cutonce
Age Rating: 4+
Languages: EN

Videos: CutOnce - Builder's Calculator App Videos

The construction calculator that generates stair and rafter PDF plans offline, on your phone. No signal, no account, no subscription. Feet and inches fraction math, code-checked stairs, rake wall stud schedules, roofing, masonry, crown angles, footings, deck, drywall, paint, and board feet, with optional material cost on every estimate.

STAIR CALCULATOR
• Enter total rise and get a complete stair layout
• Code check against IRC R311.7 (riser, tread, throat, total rise, headroom), on screen and on the plan, with every limit editable in Settings
• Live, zoomable diagrams: elevation, stringer, detail, and balusters
• Flush (deck) mount stringers, plus a landing split when one flight is too tall
• Export a detailed PDF with cut dimensions for the shop

RAFTER CALCULATOR
• Common rafters from span or run
• Ridge height, birdsmouth, tail cuts, HAP, overhang, and slope
• PDF export with all the cut angles you need

HIP & VALLEY RAFTERS
• Hip and valley lengths, backing angles, and cheek cuts
• King common and jack rafter spacing, with full PDF export

RAKE WALL / GABLE FRAMING
• Every stud length from pitch, run, base height, and on-center spacing
• Top plate bevel and pitch-off-square angles called out
• Dimensioned elevation PDF with the full stud schedule for the saw

ARC & CURVES
• Radius, diameter, arc length, and included angle from a chord and rise
• Or work back from diameter and angle, with a live curve to zoom

FEET-INCH-FRACTION MATH
• Enter measurements naturally: 3' 5-3/16" + 2' 10-1/2"
• Add, subtract, multiply, and divide all in fractions
• Choose your precision: 1/2" through 1/64"
• Five memory registers, M1 through M5, for several running totals at once

RIGHT ANGLE & TRIG
• Solve any right triangle from two known sides in feet-inches-fractions
• Sin, cos, and tan with inverses, in degrees or degrees-minutes-seconds
• Perfect for squaring walls, checking layouts, and cutting braces

ROOFING MATERIALS
• Shingle bundles and squares from roof area or measured surface
• Sheathing sheets, underlayment rolls, ridge cap, and lapped drip edge
• Live roof diagram and a shop-ready PDF takeoff

CONCRETE BLOCKS & BRICK (MASONRY)
• Block and brick counts with a fractional course layout
• Mortar yield by product and a CMU width selector (4"–12")
• Optional grout, rebar, bond-beam steel, and wall weight

CROWN MOULDING / COMPOUND MITER
• Saw miter and bevel angles for crown on a compound-miter saw
• Nested (in-position) cutting mode, angle diagram, and a PDF for the saw

MATERIAL TAKEOFFS
• Deck: boards, screws, railing posts, and balusters at code gap
• Drywall: wall and ceiling sheets, 4x8 to 4x14, openings and waste
• Paint: paintable area and gallons by coat, at your can's spread rate
• Board feet: run a whole cut list and total it on the tape
• Concrete: bags or yards with adjustable waste, plus pad and strip footings
• Area, volume, and unit conversion in imperial or metric

COST ESTIMATING
• Total Cost solves any direction: the total, what a budget buys, or the price to hit
• Optional price rows on nearly every material calculator
• Material cost prints right on the tape and the PDF

BUILT FOR THE JOBSITE
• Free 7-day trial of every advanced calculator. Basic calculator always free.
• One-time purchase to unlock. No subscriptions, no ads, free updates.
• Works on iPhone and iPad, in English and Spanish

Framing walls, cutting stringers, laying out rafters, ordering roofing and block: CutOnce gives you accurate answers in the units you actually use.

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