# StairCalc: Stair Builder Calc — Stairs, Decking & Concrete > Construction calculator for stairs, decking, flooring, and concrete. (iPhone/iPad app by Infoguide Pty Ltd.) - Source: https://appshunter.io/ios/app/staircalc-stair-builder-calc/id1014235149 (this page in markdown: same URL + `.md`) - Developer: [Infoguide Pty Ltd](https://appshunter.io/developer/920670841) - Category: Business, Utilities - Price: Free with in-app purchases (on sale, was $6.99) - Rating: 5.00/5 from 2 App Store ratings · 1 written reviews indexed - Age rating: 4+ - Requires: iOS 18.6 · 19 MB - Languages: Canadian English, French (France) - Released: 2015-07-14 - Data updated: 2026-07-28 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/staircalc-stair-builder-calc/id1014235149/reviews.md ## What is StairCalc? Stair framing, decking, flooring and concrete calculator. StairCalc is designed for carpenters, contractors and builders who need accurate stair, decking & flooring calculations. No need to remember complex data entry steps in order to enter data - start entering in any field.  Double tap on buttons for help and guides. Simultaneously find solutions when restrictions on tread, step rise, incline and '2R+G'/'2R+TD' are required. Select to apply some all or none of the restrictions depending on your situation. NOTE: Those pre-filled are not to be relied upon as Building Regulations vary greatly within countries and regions within those countries. Please check your local regulations and amend as required. Accurate and reliable, it is an indispensable tool for the stair framing, decking & flooring construction pro. Developed by carpenters and used by contractors and builders around the world. Metric or US/Imperial (feet, inches - decimal or fractions) tap icon to change. Also includes a general calculator simplified for construction calculations including a tape which can be emailed. STAIRCALC INCLUDES:- STAIR FRAMING (currently for single stair runs):- In addition to handling multiple restrictions simultaneously Staircalc also allows for situations where the overall stair rise is fixed or the stair run is fixed or both rise and run are fixed allowing maximum flexibility. ◆ Number and size of step risers, ◆ Number and size of treads, step inclines, ◆ Step incline, ◆ Stairwell opening, DECKING & FLOORING SETOUT, MATERIAL ESTIMATING and COSTING:- ◆ Options for Insets, single or double bearers ◆ Set Spacing type to maximum, fixed or equal ◆ Set pricing for materials / labour to calculate cost and cost/area ◆ Print, email or message lists and even makes notes on first TIMBER SETOUT:- Calculate and print list of stout positions. ◆ Equally spaced, maximum spacing or fixed spacing options; ◆ Insets at start and end. ◆ Lists of set out positions; ◆ Print, email or message lists and even makes notes on first; CONCRETE ESTIMATOR:- ◆ Concrete Calculator/Estimator for Slabs, footings, round and rectangular/square holes ◆ Calculate quantities for slabs, footings, round and rectangular/square holes. ◆ Estimates total volume and cost allowing for waste. CONVERTER:- ◆ Convert Lengths, Area, Volume: Metric and US/Imperial. ◆ Work in Decimal units or Yds/Ft/In/Fraction format to Metric, decimal US. EASY TO USE GENERAL CALCULATOR WITH TAPE: ◆Calculate (add, subtract etc) directly in feet / inches / fractions or decimals. ◆Common functions for quick calculation EXTENSIVE HELP: Extensive help - Single touch brings up brief help at top of screen ,tap twice on most buttons for more info. Optimised for all iPhones and iPads in portrait mode. INFOGUIDE: Infoguide is part of a small building firm based in Western Australia. This app was created by a former Roof Framing Carpenter for our team of carpenters. We use it and believe it will be as helpful to other carpenters as it was for us. Terms of Service: http://www.apple.com/legal/itunes/appstore/dev/stdeula ## Key features - Stair framing calculations - Decking and flooring material estimating - Timber setout calculations - Concrete estimator for slabs and footings - Metric and US/Imperial unit conversion - General construction calculator with tape ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | StairCalc - Stair & Deck Calculator | $12.99 | per year | | StairCalc - Stair & Deck Calculator | $1.99 | per month | ## Recent user reviews (1 of 1) All indexed reviews: https://appshunter.io/ios/app/staircalc-stair-builder-calc/id1014235149/reviews.md ### 1/5 — Too unwieldy to use *2016-01-14* I just purchased this in order to figure a stairway that will rise 7' with a 4' landing and another 7' rise. There is nothing intuitive about this and there are no instructions. Save your money. Now if I can just get the App Store to refund my $6.99. **Developer response:** Hi RevB, Sorry you were not happy with the experience. You can get detailed help on each button by double tapping it. Also the 'help' button on the top Left of the screen gives a quick overview. You do not need to enter in any order and values are saved as changed and recalculated. Main choices are to 1): Select whether the overall stair rise or run are both changing or either is fixed -' Long Press' to Change (orange Buttons). 2): Select if restrictions are to apply - 'Long Press' - ON or OFF - scroll up to set restrictions values. Please email us from Setting -> More Information->Support and we are more than ready to assist. Kind Regards StairCalc - Developers ## Frequently asked questions about StairCalc ### What types of calculations does StairCalc offer? StairCalc offers detailed calculations for stair framing, including riser and tread dimensions, step inclines, and stairwell openings. It also provides features for decking and flooring setout, material estimating, timber setout, and concrete estimation for slabs, footings, and holes. ### Can StairCalc handle different measurement units? Yes, StairCalc supports both Metric and US/Imperial units (feet, inches, decimal, or fractions). You can easily switch between them by tapping the unit icon. ### How does StairCalc assist with complex stair designs? StairCalc allows for simultaneous application of multiple restrictions, such as tread size, step rise, and incline, to find solutions. It also accommodates scenarios with fixed overall stair rise, fixed stair run, or both. ### Does StairCalc include a general calculator? Yes, StairCalc includes an easy-to-use general calculator simplified for construction calculations. It supports basic functions and can calculate directly in feet/inches/fractions or decimals, with an accompanying tape that can be emailed. ### How does StairCalc help with cost estimation? For decking and flooring, StairCalc allows you to set pricing for materials and labor to calculate the total cost and cost per area. The concrete estimator also calculates total volume and cost, allowing for waste. ### Is StairCalc suitable for international users? StairCalc supports both Metric and US/Imperial units, making it adaptable for users worldwide. However, it advises users to check local building regulations as they can vary significantly. ### What is the update frequency of StairCalc? StairCalc was last updated on December 27, 2025, indicating active development and support. The current version is 3.71. ### What are the subscription options for StairCalc? StairCalc offers subscription plans for its Stair & Deck Calculator. These include a monthly option for $1.99 and an annual option for $12.99. ## Version history (last 5 releases) ### 3.71 — 2025-12-27 Version 3.71: Bug Fix System crash on start in some settings ### 3.70 — 2025-12-05 Version 3.70: Bug fixes, improved performance and future-ready features. ### 3.50 — 2024-12-12 Version 5.50: Minor bug fixes ### 3.48 — 2024-10-08 VERSION 5.48: Minor bug fix 1) - Entry of 'mm' freezing in some situations on return from standalone calculator - Thanks Adam for the heads up; 2) - Crash on startup in very rare circumstances ### 3.02 — 2023-07-26 VERSION 3.02: Minor bug fix. ## Apps similar to StairCalc | App | Rating | Price | Category | | --- | --- | --- | --- | | [Easy Document & PDF Scanner PR](https://appshunter.io/ios/app/easy-document-and-pdf-scanner-pr/id1576728231) | — | Free | Business | | [SellerDash](https://appshunter.io/ios/app/sellerdash/id6499106933) | 5.0 (2) | Free | Business | | [JustTileSetters](https://appshunter.io/ios/app/justtilesetters/id1521426725) | 5.0 (4) | Free | Business | | [HoistHelper](https://appshunter.io/ios/app/hoisthelper/id6755858089) | — | Free | Business | | [OZMAN: Tradie Cost Tracking](https://appshunter.io/ios/app/ozman-tradie-cost-tracking/id6760247487) | — | Free | Business | ## More apps by Infoguide Pty Ltd - [Roof Guide - Carpentry Calc](https://appshunter.io/ios/app/roof-guide-carpentry-calc/id920670842) - [RoofCalc - Roofing Calculator](https://appshunter.io/ios/app/roofcalc-roofing-calculator/id1014237429) All apps by Infoguide Pty Ltd: https://appshunter.io/developer/920670841 ## Related topics [stairs x lite](https://appshunter.io/ios/topics/stairs-x-lite) --- *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 2026-07-28.*