Rafter, Stair & Framing Math
Free 14-day full trial. Then $24.99 once. No subscription, ever. Basic feet-inch math and the baluster solver stay free forever.
Pro construction calculator. One-time purchase. No subscription.
Free 14-day full-featured trial. Basic feet-inch calculator and baluster solver free forever. One-time $24.99 unlock — that's it. No subscription, ever.
TrueCut shows you the cut, not just the number. Every trade calculation renders a live, dimensioned diagram — a rafter triangle, a stringer profile, a baluster layout — so you see the answer before you make it.
Built for gloves, thumbs, and full sun: a fraction-native keypad (tap 5, then 1/2 — done), 56pt keys, haptic feedback on every press, and a one-tap high-contrast Site Mode for the jobsite.
THE PLEDGE
• One-time purchase. No subscriptions. Ever.
• Free 14-day full trial, disclosed up front — no payment info to start.
• Basic feet-inch math and the equal-spacing baluster solver stay free forever.
• Family Sharing on the full unlock — the household owns the tool.
RAFTER STUDIO
• Common, hip/valley (regular and irregular), and jack rafters with a cut list
• Motion-based pitch gauge: measure, hold, zero, then write roof pitch into the solver
• Plumb, level, and cheek cut angles shown as saw-dial settings
• Ridge allowance, overhang, and HAP
STAIR STUDIO
• Riser/tread solver with a scrollable stringer diagram
• Reference checks against your configured IRC, IBC, NBC, NCC, or UK Approved Document K limit presets — never a compliance ruling
• +1 / −1 riser stepper re-solves live so you trade riser height against run
• Headroom and stairwell opening checks, share a stringer PDF
DECK & BALUSTER STUDIO
• Equal-spacing baluster solver — count, center-to-center spacing, and the first mark off the post (free forever)
• On-center joist/stud layout at 12/16/19.2/24" or custom
• Full fence takeoffs: post bays, rails, pickets or panels, gates, post-hole concrete, and 3-4-5 square-up
CROWN & MITER STUDIO
• Spring-angle presets (38°, 45°, 52°) plus custom
• Compound miter and bevel for any corner angle, as saw-dial graphics
• Nested vs upside-down cutting guidance with a diagram
MATERIALS STUDIO
• Concrete volume and bag counts, roofing squares, drywall and siding sheets, paint, flooring, tile, blocks, board feet, studs
• Arc & Circle card: circumference, area, arc length, and arch layout
• Lightweight estimates with waste factor and unit cost that roll up to a total
FULL FEET-INCH-FRACTION MATH
• Add, subtract, multiply, divide, powers, and square roots across mixed units
• Decimal feet, decimal inches, yards, and full metric (m, cm, mm)
• Fraction resolution from 1/2 to 1/64 with smart auto-reduce
• Convert in place, 4 memory slots, square-up with angle entry, and a persistent tape you can restore and edit
SHARE THE CUT
Every studio exports a dimensioned Cut Sheet as a PDF — AirDrop or text it to your crew. Cut sheets carry a verify-before-cutting reference line.
PRIVACY
No analytics, no accounts, no ads. The app makes no network calls. Purchases handled by Apple. iCloud stores only your trial start date — we never see it. App Privacy label: Data Not Collected.
Reference calculation — verify against local code and field conditions before cutting.
Chrome-Stats does not own this Apple app. Please use these information below to contact the Apple app developer.