# OpusCalc Pro: Contractor Calc — Pro Framing & Material Tools > Pro Framing & Material Tools (iPhone/iPad app by RM Digital Enterprise LLC.) - Source: https://appshunter.io/ios/app/opuscalc-pro-contractor-calc/id6759811821 (this page in markdown: same URL + `.md`) - Developer: [RM Digital Enterprise LLC](https://appshunter.io/developer/1847091059) - Category: Utilities, Productivity - Price: Free with in-app purchases - Age rating: 4+ - Requires: iOS 15.1 · 50 MB - Languages: English - Released: 2026-03-09 - Data updated: 2026-07-22 - User reviews in markdown: https://appshunter.io/ios/app/opuscalc-pro-contractor-calc/id6759811821/reviews.md ## What is OpusCalc Pro? OpusCalc Pro is a professional construction calculator for contractors, framers, and tradespeople — built for feet, inches, and fractions on the job site. Try all 11 calculators free. Get IRC-compliant stair layouts, concrete yardage, stud counts, rafter lengths, drywall sheets, and more — with a custom imperial keyboard designed for field use. 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 (OPUSCALC PRO) With an OpusCalc Pro subscription, save calculations to named projects, sync across devices, and export branded PDFs 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. Support: support@opuscalc.com Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Built by RM Digital Enterprise LLC ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | OpusCalc Pro | $2.99 | per month | | OpusCalc Pro | $19.99 | per year | ## Version history (last 4 releases) ### 1.0.5 — 2026-07-22 • Improved readability for field use — clearer labels, results, and category colors • Key order quantities (yards, sheets, studs, and more) highlighted in gold • Fixed paywall close button placement • Smoother navigation and stability improvements ### 1.0.4 — 2026-03-30 • 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 ### 1.0.3 — 2026-03-10 Projects search — Quickly find any project by name using the new search bar on the Projects screen and in the Save to Project sheet PDF export — Share any project as a branded PDF via AirDrop, email, or save to Files using the new share button on each project card Project management — Rename and delete projects directly from an edit sheet; delete button is now inside the edit flow for a cleaner interface Save to Project improvements — Sheet now expands for more room, buttons anchored to the bottom, and existing projects list is searchable ### 1.0.2 — 2026-03-09 No release notes. ## More apps by RM Digital Enterprise LLC - [Satchel City Carrier](https://appshunter.io/ios/app/satchel-city-carrier/id6754207254) - [FODMAP Scanner: IBS Diet](https://appshunter.io/ios/app/fodmap-scanner-ibs-diet/id6754821593) - [AquaDeck: Aquarium Manager](https://appshunter.io/ios/app/aquadeck-aquarium-manager/id6755662946) - [VECTIS: Jobs & Invoices](https://appshunter.io/ios/app/vectis-jobs-and-invoices/id6759268208) - [CraftyCents: Seller Budgeting](https://appshunter.io/ios/app/craftycents-seller-budgeting/id6762497481) All apps by RM Digital Enterprise LLC: https://appshunter.io/developer/1847091059 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-22.*