
OpusCalc Pro: Contractor Calc
Pro Framing & Material Tools
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Free
In-App Purchases
About
OpusCalc Pro is the definitive digital companion for contractors, framers, and tradespeople who demand precision on the job site. Built by RM Digital Enterprise LLC, this app replaces bulky physical calculators with a sleek, intuitive interface and 100% verified math engines.
Whether you are calculating complex stair stringers or estimating a full room of drywall, OpusCalc Pro ensures your layouts are accurate, your material orders are perfect, and your projects stay organized.
11 PROFESSIONAL CALCULATORS
Stair Stringer: Get 2021 IRC-compliant layouts in seconds, including exact riser heights, tread counts, and total run.
Roof Rafter: Master common, hip, and valley rafters with precise fractional outputs for any pitch.
Stud Count: Calculate field studs, corners, T-wall intersections, openings, and plate material with adjustable 5%, 10%, or 15% waste margins.
Drywall: Estimate sheet counts from gross area minus doors and windows, with adjustable waste.
Paint: Calculate gallons needed by coat count, adjusted for doors and windows.
Flooring and Tile: Convert any area into exact tile or box counts with adjustable waste factors so you never run short.
Concrete Volume: Estimate cubic yardage for slabs, columns, and footings, including pre-mix bag counts.
Block and Brick: CMU block and brick estimator with mortar bag counts and adjustable waste margins.
Right Angle: Square up any layout instantly using 3-4-5 triangle math.
Area and Volume: General area and cubic yard calculator with waste margin.
Fractions: Convert between fractions and decimals in one tap.
PROJECT MANAGEMENT
Save every calculation to named projects and export them as a branded PDF to share via AirDrop, email, or Files. Your work is saved locally first and syncs to the cloud automatically when online.
FIELD READY
A high-contrast dark mode designed for readability in any lighting, featuring a custom imperial keyboard for fast fractional input in feet, inches, and fractions — the way you actually measure on the job site.
OPUSCALC PRO SUBSCRIPTION
Try all 11 calculators free before subscribing. Unlock unlimited calculations with a monthly or yearly plan.
Payment is charged to your Apple ID. Subscription renews automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel anytime in your App Store account settings.
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
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What's New in OpusCalc Pro
1.0.4
March 30, 2026
• PDF Export — Share any project as a branded PDF via AirDrop, email, or Files • Project Search — Find projects instantly by name • Save to Project — Fixed an issue where calculations were saved but not recorded correctly • Edit Sheet — Rename and delete projects from a single menu
MoreSubscription plans
OpusCalc Pro
Unlimited access to all pro calculators.
$2.991 Month




