# Carpenter Pro Calc — All-trade calc. No ads. > Construction trade calculator for carpenters, roofers, and remodelers. (iPhone/iPad app by 向 潘.) - Source: https://appshunter.io/ios/app/carpenter-pro-calc/id6763916367 (this page in markdown: same URL + `.md`) - Developer: [向 潘](https://appshunter.io/developer/1437711978) - Category: Utilities, Productivity - Price: Free with in-app purchases - Rating: 5.00/5 from 1 App Store ratings - Age rating: 4+ - Requires: iOS 18.0 · 2 MB - Languages: American English, French (France), German (Germany), Italian, Japanese, Korean, Brazilian Portuguese, Chinese (Simplified, China), European Spanish, Chinese (Traditional, Taiwan) - Released: 2026-04-28 - Data updated: 2026-07-21 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/carpenter-pro-calc/id6763916367/reviews.md ## What is Carpenter Pro Calc? Built in 2026, not 2012. Carpenter is the trade calculator for carpenters, framers, roofers, and remodelers who are tired of plastic-calculator emulators, ads mid-job, and per-trade upsells. One-time $14.99. Full Pro toolkit. All IRC editions. Forever. FREE CALCULATORS • Feet-Inch Calculator — fractional math (5'4 1/2" + 3'7 3/8") with configurable precision (1/2, 1/4, 1/8, 1/16, 1/32) • Unit Converter — Length, Area, Volume, Temperature, Weight, Pressure (ft↔m, in↔mm, ft²↔m², yd³↔m³, °F↔°C, lb↔kg, psi↔kPa) • Area Calculator — rectangle, triangle, circle, trapezoid • Roof Pitch Calculator — rise/run ↔ angle ↔ slope % PRO CALCULATORS — $14.99 one-time (V1.0) • Stair Calculator — total rise/run, treads, IRC R311.7 layout, feet-inch fractions • Rafter Calculator — common, hip, valley, jack, ridge cut, birdsmouth, tail cut, plumb/bevel • Material Estimator — board feet, lineal feet, sheet goods, waste • Concrete Slab — yards, 60lb/80lb bags, rebar grid, expansion joints • Framing Layout — wall studs (16/19.2/24 OC), plates, blocking, header sizing per IRC R602 • Tile Layout — area + grout joint + waste, per-box, layout offset • Roof Coverage — squares, bundles, ridge cap, drip edge, underlayment REFERENCE TABLES • IRC R602 — stud spacing • IRC R311 — stair geometry • IRC R905 — roofing material reference • Lumber dimensions (nominal vs actual) WHY CARPENTER? - No ads. Ever. - No accounts. No sign-in. - All IRC editions included — 2018, 2021, 2024 (no future upsell) - No subscription required — $14.99 once, forever - 7-day free trial of Pro - 100% offline — no signal needed on the jobsite - Dark mode + glove-friendly tap targets - Universal — iPhone + iPad in one purchase Same pricing model as Conduit — our sister electrician calculator. You buy it once, you own it forever. That's the deal. — LEGAL — Privacy Policy: https://panxiang1017.github.io/StaticPage/privacy-policy.html Terms of Use (EULA): https://panxiang1017.github.io/StaticPage/terms-of-use.html ## Key features - Fractional math for measurements - Unit conversion for various metrics - Area and roof pitch calculations - Stair and rafter layout tools - Material and concrete slab estimation - Framing and tile layout assistance - Offline functionality ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Carpenter Pro — Unlock All | $14.99 | one-time | ## Frequently asked questions about Carpenter Pro Calc ### What is Carpenter Pro Calc? Carpenter Pro Calc is a specialized calculator app designed for construction trades. It offers a suite of tools for measurements, material estimation, and layout calculations, with both free and pro features available. ### Does Carpenter Pro Calc have ads? No, Carpenter Pro Calc is advertised as having no ads. The developer emphasizes an ad-free experience for users, even in the free version of the app. ### How much does Carpenter Pro Calc cost? The app offers free calculators and a Pro toolkit for a one-time purchase of $14.99. This purchase includes all IRC editions and future updates without additional cost. ### Can I use Carpenter Pro Calc offline? Yes, Carpenter Pro Calc is designed to be 100% offline. This means you can use all its features on the jobsite without needing a signal or internet connection. ### What kind of calculations can Carpenter Pro Calc perform? It includes a feet-inch calculator with fractional math, unit converters, area calculators, roof pitch calculators, stair calculators, rafter calculators, material estimators, concrete slab calculators, and framing layout tools. ### What are the Pro features in Carpenter Pro Calc? The Pro features, available for a one-time fee, include advanced calculators for stairs, rafters, material estimation, concrete slabs, framing layout, and tile layout, along with comprehensive reference tables. ### What devices is Carpenter Pro Calc available on? Carpenter Pro Calc is available on both iPhone and iPad, offering a universal purchase that covers both devices. ### How often is Carpenter Pro Calc updated? The app was last updated on July 6, 2026, indicating active development and support. The developer promises all IRC editions, including future ones, will be included without upsells. ## Version history (last 5 releases) ### 0.5 — 2026-07-15 v0.5 -- Cut Diagrams, Siri & Free Trial ▸ Stair & Rafter cut diagrams -- dimensioned side profiles with riser/tread and plumb-cut callouts, IRC reference included ▸ Share diagrams as PNG -- text, AirDrop or print for the cut station ▸ Siri Shortcuts -- feet-inch math and unit conversions, hands-free ▸ 7-day free trial -- try every Pro calculator, then one-time purchase. No subscription, ever. No ads. No accounts. 100% offline. ### 0.4 — 2026-07-06 New in 0.4: - Calculation history & paper tape: every result is saved, tap any line to reuse it - Feet-inch keyboard upgrades: backspace, 1/64 precision, larger glove-friendly keys - New Pro calculators: Crown Molding (miter/bevel) and Baluster Spacing - Pro one-time price lowered to $9.99 - pay once, own forever ### 0.3 — 2026-05-01 v0.3 -- 4 New Pro Calculators ▸ Deck Builder -- joist spacing, ledger board, post layout, IRC 2021 load check ▸ Drywall Estimator -- sheets, screws, joint compound, tape for any room ▸ Paint Calculator -- gallons by area and coats, primer, optional cost estimate ▸ Beam/Header Sizing -- span + load to recommended lumber size (IRC R602.7) Also new: Italian localization (10 languages total). No ads. No accounts. 100% offline. ### 0.2 — 2026-04-29 Carpenter v0.2 — Pro tier is finally here! ▸ Pro Calculators now functional and purchasable ▸ NEW: Stair Calculator (IRC R311.7 compliance) ▸ NEW: Rafter Calculator (common rafter length + cut angles) ▸ NEW: Material Estimator (board feet, sheets, cost rollup) ▸ NEW: Concrete Slab Calculator (cubic yards + bag count) ▸ NEW: Framing Layout (16/19.2/24 OC stud spacing) ▸ Improved: Paywall with one-tap unlock and Restore Purchases ▸ Bug fix: v0.1 had no purchase UI — apologies! One-time $14.99, no subscription, no ads. ### 0.1 — 2026-04-28 No release notes. ## More apps by 向 潘 - [Kakeibo-家計簿](https://appshunter.io/ios/app/kakeibo/id6762317611) - [Conduit – Electrician Calc](https://appshunter.io/ios/app/conduit-electrician-calc/id6763911546) - [Cashflow — Real Estate](https://appshunter.io/ios/app/cashflow-real-estate/id6764056720) All apps by 向 潘: https://appshunter.io/developer/1437711978 --- *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 2026-07-21.*