# Stair Calculator: Construction — Step, Run, Rise, Angle, Length > Tool for calculating stair construction parameters like steps, run, rise, and angle. (iPhone/iPad app by Phan Nhat Đang.) - Source: https://appshunter.io/ios/app/stair-calculator-construction/id1493037366 (this page in markdown: same URL + `.md`) - Developer: [Phan Nhat Đang](https://appshunter.io/developer/1437390098) - Category: Utilities, Productivity - Price: Free with in-app purchases - Rating: 4.12/5 from 738 App Store ratings · 28 written reviews indexed - Age rating: 4+ - Requires: iOS 15.0 · 1 MB - Languages: English, French, German, Portuguese, Spanish, Vietnamese - Released: 2019-12-28 - Data updated: 2026-08-26 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/stair-calculator-construction/id1493037366/reviews.md ## What is Stair Calculator? Stair Calculator helps you calculate and compare staircase dimensions. FEATURES • Calculate using Run, Total Run, or Stair Angle • Enter a specific number of Runs or explore all calculated options • Support Metric and Imperial units • View detailed measurements and stair diagrams • Export results as a PDF or image • Copy results to the clipboard IMPORTANT Results are generated based on user-provided values and general calculation models. The app is intended for reference and educational purposes only. Please verify all measurements, local building requirements, and safety standards before actual construction. SUBSCRIPTION This subscription package offers unlimited access to all app features throughout the subscription period. • Payment will be charged to your Apple Account at confirmation of purchase. • The subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. • Your Apple Account will be charged for renewal within 24 hours before the end of the current period, and the renewal cost will be identified. • Subscriptions may be managed and auto-renewal may be turned off in your Apple Account Settings after purchase. • Any unused portion of a free trial period, if offered, will be forfeited when you purchase a subscription, where applicable. PRIVACY POLICY https://13520178.github.io/StairCalc/policy.html TERMS OF USE https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ CONTACT If you have any questions or suggestions, please contact us. Email: phannhatd@gmail.com ## Key features - Calculate stair construction parameters - Flexible input for Run or Total Run - Determine largest and smallest step sets - Support for various units - Copy results to clipboard ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Annual Premium Package | $9.99 | per year | **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Unlock all features | $5.99 | one-time | ## What do users think of Stair Calculator? Overall sentiment: negative **Pros** - 👍 Easy to use - 🚀 Helpful information - 🚀 Provides useful calculations **Cons** - 🐛 Doesn't work as expected - 🔒 No way to cancel subscription - 🔒 Difficult to cancel trial - 🤬 Obnoxious ads - 🤬 Misleading as a learning tool **Commonly reported bugs** - Subscription numbers don't add up - Doesn't provide promised features after purchase **Most requested features** - Option to uninstall app - Ability to calculate run based on rise and landing space - Provide more detailed diagrams and visuals ## Recent user reviews (10 of 28) All indexed reviews: https://appshunter.io/ios/app/stair-calculator-construction/id1493037366/reviews.md ### 5/5 — Southern Oregon Contractor Services *2026-05-05* I have been using this app for 7+ years now. It has been very useful! ### 1/5 — Nul *2026-03-09* Ça m’a pris l’abonnement sans la période d’essai. C’est juste un très simple calculateur pour un escalier droit. Pas besoin de payer, une calculatrice ferait la même chose. Il ne permet pas de faire d’autre type d’escalier ! **Developer response:** Bonjour, Merci pour votre retour. L’application propose normalement une période d’essai gratuite avant le paiement pour les utilisateurs éligibles. Toutefois, un essai gratuit peut ne plus être disponible dans certains cas, par exemple lorsqu’il a déjà été utilisé auparavant avec le même compte. L’application est actuellement conçue principalement pour les calculs rapides d’escaliers droits simples. Merci pour votre remarque, elle nous aidera à améliorer les prochaines versions. ### 1/5 — Can’t cancel *2025-05-10* There’s no way to cancel your subscription within the app. If there is it’s not obvious and the developer is not responsive to requests for help. **Developer response:** Hi, Thank you for your feedback. Subscription management and cancellation are handled through the App Store account settings, and information about subscriptions is also included in the app description before purchase. Thank you for your feedback — it helps improve the user experience in future updates. ### 1/5 — Cancelled after poor numbers that didn’t add up *2025-04-18* Cancelled after numbers made no sense ### 1/5 — I’m not a fan of the idea that you make your app look like a learning tool, actually it’s bloatware. *2025-02-01* I am very experienced in takeoffs and Iso’s from many different companies and -regions , so I would like to be clear about the best approach for this project, disclose your contractual terms prior to download. If the app doesn’t provide uninstall option then I can add one for you. ### 1/5 — Why pay money when you can get it for free? *2025-01-23, version 2.0.0* I downloaded the app with a free trial period and there appears to be no way to cancel it so that you will not be charged. ### 1/5 — Obnoxious ads *2024-10-24* The ads are obnoxious. And have nothing to do with construction. ### 5/5 — Really helpful *2024-10-21* Gave me the information that I needed. Slow down on the flipping of the device maybe…a close shot of The end cuts. Just thoughts.. mine worked out. Thank you. ### 5/5 — Doesn’t work for me *2024-09-29* Just didn’t work for me I’m canceling ### 1/5 — Fraud *2024-08-03* Attempted to discontinue trial but there is no option to do so. Also tried to contact them to cancel and no response. They make you opt into a trial but dont give you option to cancel and just take your money. **Developer response:** Hi, Thank you for your feedback. The app offers a free trial period for eligible users, and trial subscriptions can be cancelled anytime through the App Store account settings before the renewal date. Subscription details are also provided in the App Store description before purchase. Thank you for sharing your experience. Your feedback helps improve future updates. ## Frequently asked questions about Stair Calculator ### What does the Stair Calculator app do? The Stair Calculator app is a utility tool designed to help users calculate various parameters essential for constructing stairs. It allows for flexible input of measurements like run or total run and provides calculations for steps, rise, angle, and length. ### What are the key features of the Stair Calculator app? Key features include the ability to calculate all necessary parameters for building stairs, flexible input options for run measurements, determination of the largest and smallest step sets, support for various units, and the functionality to copy results to the clipboard. ### How does the Stair Calculator app handle pricing and subscriptions? The app offers a subscription package for unlimited access to all features. Payment is charged to your iTunes Account upon purchase confirmation, and subscriptions automatically renew unless turned off at least 24 hours before the current period ends. ### What devices is the Stair Calculator app compatible with? While specific device compatibility is not detailed, the app is available on iOS platforms as indicated by the mention of iTunes Account for payments and subscriptions. Users can manage their subscriptions through their device's Account Settings. ### Who would benefit from using the Stair Calculator app? This app is beneficial for anyone involved in stair construction, including professional builders, contractors, carpenters, and DIY enthusiasts. It simplifies complex calculations, ensuring accuracy and efficiency in stair building projects. ## Version history (last 5 releases) ### 2.3.0 — 2026-08-18 Bug fixes and performance improvements. ### 2.2.0 — 2026-05-26 Bug fixes and performance improvements. ### 2.1.0 — 2026-04-19 Bug fixes and performance improvements. ### 2.0.0 — 2024-02-28 Optimizing user experience. ### 1.7.0 — 2023-07-31 Bug fixes and performance improvements ## Apps similar to Stair Calculator | App | Rating | Price | Category | | --- | --- | --- | --- | | [Construction Master Pro Calc](https://appshunter.io/ios/app/construction-master-pro-calc/id370406446) | 4.8 (39,372) | Free | Utilities | | [Material Estimator Calculator](https://appshunter.io/ios/app/material-estimator-calculator/id376071081) | 4.8 (3,093) | Free | Utilities | | [Construction Master 5 Calc](https://appshunter.io/ios/app/construction-master-5-calc/id370412148) | 4.8 (13,064) | Free | Utilities | | [Concrete Calculator Plus](https://appshunter.io/ios/app/concrete-calculator-plus/id1494386815) | 4.8 (21,304) | Free | Utilities | | [Feet and Inches Calculator](https://appshunter.io/ios/app/feet-and-inches-calculator/id1072241945) | 4.6 (401) | Free | Utilities | | [Feet & Inches Tape Calculator](https://appshunter.io/ios/app/feet-and-inches-tape-calculator/id1434258634) | 4.4 (9,261) | Free | Utilities | ## More apps by Phan Nhat Đang - [Compound Interest Calc: Growth](https://appshunter.io/ios/app/compound-interest-calc-growth/id1437390099) - [Weight loss journal, diary](https://appshunter.io/ios/app/weight-loss-journal-diary/id1455057273) - [Basic grocery list + price](https://appshunter.io/ios/app/basic-grocery-list-plus-price/id1477000933) - [GFR Calculator - eGFR Calc](https://appshunter.io/ios/app/gfr-calculator-egfr-calc/id1485507590) - [Auto Loan Calculator - Car](https://appshunter.io/ios/app/auto-loan-calculator-car/id1487930075) - [Mortgage Calculator: Payment](https://appshunter.io/ios/app/mortgage-calculator-payment/id1489668528) All apps by Phan Nhat Đang: https://appshunter.io/developer/1437390098 ## Related topics [stair calculator](https://appshunter.io/ios/topics/stair-calculator) · [stair calculator construction](https://appshunter.io/ios/topics/stair-calculator-construction) · [my carpentry](https://appshunter.io/ios/topics/my-carpentry) · [stairs calculator](https://appshunter.io/ios/topics/stairs-calculator) · [stair calculator with stringer details](https://appshunter.io/ios/topics/stair-calculator-with-stringer-details) · [stair stringer calculator](https://appshunter.io/ios/topics/stair-stringer-calculator) · [redx stairs](https://appshunter.io/ios/topics/redx-stairs) · [stair calculator pro](https://appshunter.io/ios/topics/stair-calculator-pro) · [staircase calculator](https://appshunter.io/ios/topics/staircase-calculator) · [stair calculator plus](https://appshunter.io/ios/topics/stair-calculator-plus) · [app builder free stair](https://appshunter.io/ios/topics/app-builder-free-stair) · [stairs](https://appshunter.io/ios/topics/stairs) · [stairs steps](https://appshunter.io/ios/topics/stairs-steps) · [free stair calculator](https://appshunter.io/ios/topics/free-stair-calculator) · [stair stepper](https://appshunter.io/ios/topics/stair-stepper) · [stair calculator 2](https://appshunter.io/ios/topics/stair-calculator-2) · [calculate construction](https://appshunter.io/ios/topics/calculate-construction) · [feet inch calc](https://appshunter.io/ios/topics/feet-inch-calc) --- *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 2026-08-26.*