# Carpenter Square & Stair Calc — Construction Framing + Level > Construction framing and layout calculator with squaring, stair design, and leveling tools. (iPhone/iPad app by Red Shepard.) - Source: https://appshunter.io/ios/app/carpenter-square-and-stair-calc/id1305126201 (this page in markdown: same URL + `.md`) - Developer: [Red Shepard](https://appshunter.io/developer/1147262242) - Category: Utilities, Productivity - Price: $1.99 - Rating: 2.80/5 from 111 App Store ratings · 4 written reviews indexed - Age rating: 4+ - Requires: iOS 15.6 · 1 MB - Languages: American English - Released: 2017-11-06 - Data updated: 2026-08-22 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/carpenter-square-and-stair-calc/id1305126201/reviews.md ## What is Carpenter Square & Stair Calc? Three essential construction tools in one pocket-sized app. Carpenter Square gives you corner squaring (Pythagorean theorem), a complete stair calculator with building code support, and a digital bubble level — all with direct tape measure input in feet, inches, and sixteenths. No decimal conversion. No signup. Just open and go. ----------------------------------------- CORNER SQUARING CALCULATOR ----------------------------------------- Square your corners in seconds — not minutes. Enter any 2 sides of a right triangle and we instantly calculate the 3rd. • Input directly in feet, inches, and sixteenths — straight from your tape measure • Calculates any missing side: Leg A, Leg B, or hypotenuse • Visual triangle diagram with all three measurements labeled • Save and recall your 7 most recent calculations • Input validation catches impossible triangles before you waste material Whether you're checking a foundation, squaring a deck frame, or verifying a wall layout — get your answer and get back to work. ----------------------------------------- STAIR CALCULATOR ----------------------------------------- Enter your floor-to-floor height and get a complete stair layout instantly. No more guessing riser counts or pulling out a separate calculator for stringer cuts. • Number of risers and treads — calculated to code • Exact riser height — evenly distributed across all steps • Customizable tread depth (default 10", adjustable 9"–14") • Total run — the full horizontal distance of your staircase • Stringer length — the diagonal measurement for your cut • Required floor opening — sized to your headroom clearance • Stair angle in degrees • Residential (8" max rise) and Commercial (7" max rise) building code support • Headroom clearance calculation (default 6'8" minimum) • Visual staircase diagram with labeled dimensions • Save and recall previous staircase designs Building code compliance note included with every calculation. Always verify with your local building official. ----------------------------------------- DIGITAL BUBBLE LEVEL ----------------------------------------- Turn your iPhone into a precision level. Uses your device's built-in motion sensors to give you real-time tilt measurements. • Animated bubble indicator moves with your device • Angle displayed in degrees with 0.1° precision • +/- 25° measurement range • No calibration needed — works immediately ----------------------------------------- BUILT FOR THE JOB SITE ----------------------------------------- Carpenter Square was designed and engineered by contractors with more than 30 years in the building industry. Every feature is built around one principle: tape measure in, answer out. • Measurements in feet, inches, and sixteenths — the way you actually measure • Fractions auto-simplify for easy reading (8/16 > 1/2, 14/16 > 7/8) • Save up to 7 recent calculations per tool — tap to recall instantly • Visual diagrams for every calculation so you can verify at a glance • Under 2.5 MB — downloads in seconds, even on spotty job-site signal • No account required. No data collected. No ads. Just the tools you need. Perfect for carpenters, framers, general contractors, remodelers, deck builders, stair builders, and anyone who needs fast, accurate construction math without fumbling with a calculator. Download Carpenter Square and get back to building. ## Key features - Corner squaring calculator - Stair calculator with code support - Digital bubble level - Direct tape measure input (feet, inches, sixteenths) - Visual diagrams for calculations - Save and recall recent calculations ## Chart rankings - #197 in Top Paid · Utilities (US App Store) ## Recent user reviews (4 of 4) All indexed reviews: https://appshunter.io/ios/app/carpenter-square-and-stair-calc/id1305126201/reviews.md ### 5/5 — Update bug *2025-03-12, version 2.8* I’m also having issues inputting the second measurement. It only lets me put one digit, and then it freezes. It used to work before the update. ### 1/5 — Update glitch *2024-10-30, version 2.8* Ever since the new update when you go to input the second measurement, it only allows a single digit under the foot so you have to convert everything to inches in order to get your square. Very annoying. ### 5/5 — Feet and inches *2018-04-21, version 2.6* This app is a great idea and it calculates in feet and inches and in 16th . It’s perfect! ### 5/5 — Interior designer *2017-12-09, version 2.5* I love this little app for its quick calculations and bubble leveler.... so easy to use and right on my phone. No carrying extra calculators! Also Nice feature with the family sharing…I have my whole staff using it. ## Frequently asked questions about Carpenter Square & Stair Calc ### What is Carpenter Square & Stair Calc? Carpenter Square & Stair Calc is a utility app that combines a corner squaring calculator, a stair calculator with building code support, and a digital bubble level. It's designed for construction professionals and DIYers to simplify framing and layout tasks. ### Does Carpenter Square & Stair Calc have ads? No, Carpenter Square & Stair Calc does not contain advertisements. It is a paid application that offers an ad-free experience for its users. ### What is the price of Carpenter Square & Stair Calc? Carpenter Square & Stair Calc is available for a one-time purchase of $1.99. This price grants you access to all its features without any recurring fees or in-app purchases. ### What devices does Carpenter Square & Stair Calc support? Carpenter Square & Stair Calc is designed for Apple devices, specifically supporting iPhones and iPods. It is not currently available for Android devices. ### How often is Carpenter Square & Stair Calc updated? The app was last updated on February 10, 2026, indicating recent development activity. While specific update frequency isn't detailed, this suggests ongoing support and potential improvements. ### What is the age rating for Carpenter Square & Stair Calc? Carpenter Square & Stair Calc has an age rating of 4+. This indicates it is suitable for a wide audience, including younger users, due to its straightforward utility functions. ### Can Carpenter Square & Stair Calc calculate stairs for different building codes? Yes, the stair calculator in Carpenter Square & Stair Calc supports both Residential (8" max rise) and Commercial (7" max rise) building codes. It calculates riser and tread counts, exact riser height, and total run to code. ### How does Carpenter Square & Stair Calc handle measurements? Carpenter Square & Stair Calc allows direct input of measurements in feet, inches, and sixteenths, mirroring how contractors use tape measures. It automatically simplifies fractions and avoids the need for decimal conversions. ## Version history (last 5 releases) ### 2.9 — 2026-02-10 NEW: Full stair calculator with building code compliance! Enter floor-to-floor height → get risers, treads, stringer length & more. Tap measure in, answer out. ### 2.8 — 2024-09-06 This update fixes a couple bugs, and adds the ability for quick tabbing between measurement fields. ### 2.7 — 2023-01-03 This updated fixes the issue where your keyboard would cover the text entry in the main page of the app ### 2.6 — 2018-01-17 This app has been updated by Apple to display the Apple Watch app icon. Updated App Name and Pricing ### 2.5 — 2017-12-04 This update includes support for Apple's ARKit. Use our ARKit Squaring tool to measure two sides of your triangle and we'll auto-populate the third, right on your screen as if it were right in front of you! We also included a new Bubble Level tool to help you ensure that your surfaces are square and even before calculating all your edges. ## Apps similar to Carpenter Square & Stair Calc | App | Rating | Price | Category | | --- | --- | --- | --- | | [Construction Master Pro Calc](https://appshunter.io/ios/app/construction-master-pro-calc/id370406446) | 4.8 (39,372) | Free | Utilities | | [Tape Measure™](https://appshunter.io/ios/app/tape-measure/id1271546805) | 4.4 (87,981) | Free | Utilities | | [AR Ruler Cam: Tape Measure](https://appshunter.io/ios/app/ar-ruler-cam-tape-measure/id848139616) | 3.8 (8) | Free | Utilities | | [Tape Measure Calculator Pro](https://appshunter.io/ios/app/tape-measure-calculator-pro/id482504435) | 4.8 (2,196) | $3.99 | Utilities | | [Measure](https://appshunter.io/ios/app/measure/id1383426740) | 3.1 (1,569) | Free | Utilities | | [Tape Measure & Ruler Арр](https://appshunter.io/ios/app/tape-measure-and-ruler/id1453537222) | 4.2 (4,291) | Free | Utilities | ## More apps by Red Shepard - [Game Recap: Al Sports Talk](https://appshunter.io/ios/app/game-recap-al-sports-talk/id6742810727) All apps by Red Shepard: https://appshunter.io/developer/1147262242 ## Related topics [red shepard](https://appshunter.io/ios/topics/red-shepard) · [carpenter square](https://appshunter.io/ios/topics/carpenter-square) · [carpenters square](https://appshunter.io/ios/topics/carpenters-square) · [carpenter triangle](https://appshunter.io/ios/topics/carpenter-triangle) --- *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 2026-08-22.*