# StairSmith — Stair calculator. No subs. > Stair calculator for builders and DIYers with code checks and cut lists. (iPhone/iPad app by Taylor Cascino.) - Source: https://appshunter.io/ios/app/stairsmith/id6767048001 (this page in markdown: same URL + `.md`) - Developer: [Taylor Cascino](https://appshunter.io/developer/1882107919) - Category: Utilities, Productivity - Price: $6.99 (on sale, was $9.99) - Rating: 5.00/5 from 1 App Store ratings - Age rating: 4+ - Requires: iOS 17.0 · 5 MB - Languages: English - Released: 2026-05-07 - Data updated: 2026-07-27 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/stairsmith/id6767048001/reviews.md ## What is StairSmith? The stair calculator built for builders and DIYers. Type your total rise. StairSmith equalizes the risers, draws the elevation diagram live, runs the building-code checks, and tells you what to cut instantly. No account, no cloud, no subscription. HERO FEATURES • Live elevation diagram — pinch, pan, tap any dimension to learn what it means. • Cut Sheet hero — riser height, code going, riser count, stringer length. Take it to the saw. • Lumber cheat sheet — number of stringers, treads, and risers, with stringer length rounded to the next standard 2×12. • Framing-square layout — "set tongue at 7", blade at 10"" with a beautiful, printable diagram on page 2 of every PDF. • Code compliance built in — IRC 2021, IBC 2021, NBC 2020, UK Part K, and Australia NCC. Pass/fail on riser, going, 2R+T, and headroom. Free handrail and guard reminders. • Print-ready PDF — elevation diagram, cut list, lumber list, framing-square layout, and disclaimer. AirDrop, email, or print directly. DESIGNED FOR THE SHOP StairSmith is built around the moment you're at the workbench, sawdust on your glasses, trying to remember what number to mark. Open the "Show at Saw" sheet — the diagram fills your screen, with the two numbers you need in giant monospace type. Slide the framing square down the board, mark, repeat. WHY ONE-TIME PURCHASE Every other stair calculator on the App Store is either subscription-hostile or ad-ridden. StairSmith is a one-time purchase. Yours forever. No upsells, no nag screens, no "Pro" tier locked behind a paywall. FOR DIY HOMEOWNERS First time building a flight of stairs? Tap the (i) on Total Rise and you'll get a 3-sentence explanation of how to measure it correctly so your stairs don't end up an inch off. Tap any "Cut Number" on the Cut Sheet hero to learn what it means. The app teaches you while you use it. FOR PROS Switch between IRC, IBC, NBC, Part K, and NCC with a tap. Switch between imperial (with fractional input) and metric (mm) instantly. Save unlimited projects locally. The PDF cut sheet is dense, professional, and ready to hand a permit reviewer or a trade partner. PRIVACY StairSmith collects nothing. No account, no cloud, no analytics, no tracking, no ads. Your projects live only on your device. NOT INCLUDED IN v1.0 (coming): multi-flight stairs, winders, landings, and isometric view. Today it's straight single-flight stairs only, done extremely well. Built in California, by a builder who got tired of subscription tools that disrespect their users. Questions: support@cascinobuilders.com ## Key features - Live elevation diagram - Print-ready PDF reports - Building code compliance checks - Framing square layout diagrams - Lumber and cut sheet generation - Supports multiple building codes ## Chart rankings - #198 in Top Paid · Utilities (US App Store) ## Frequently asked questions about StairSmith ### What is StairSmith? StairSmith is a utility app designed to calculate stair dimensions, check building code compliance, and generate cut lists for builders and DIYers. It offers features like live elevation diagrams and framing square layouts. ### How much does StairSmith cost? StairSmith is a one-time purchase priced at $6.99. The developer emphasizes that there are no subscriptions, upsells, or hidden "Pro" tiers. ### Does StairSmith have ads? No, StairSmith is ad-free. The developer explicitly states that the app collects no data, including analytics or tracking, and contains no advertisements. ### What building codes does StairSmith support? StairSmith supports multiple building codes including IRC 2021, IBC 2021, NBC 2020, UK Part K, and Australia NCC. It performs pass/fail checks for riser, going, 2R+T, and headroom. ### What devices is StairSmith available on? StairSmith is available on iPhone and iPad. It is designed for iOS devices. ### How often is StairSmith updated? The latest version, 1.0.2, was released on May 14, 2026, indicating recent development activity. The app was initially released on May 7, 2026. ### What are the limitations of StairSmith? Currently, StairSmith v1.0 only supports straight, single-flight stairs. Features like multi-flight stairs, winders, and landings are not included in the current version but may be added in the future. ### Is StairSmith suitable for beginners? Yes, StairSmith is designed for DIY homeowners as well. It includes helpful explanations for measurements and dimensions, teaching users as they go. ## Version history (last 2 releases) ### 1.0.2 — 2026-05-14 Polish and bug fixes. ### 1.0 — 2026-05-08 No release notes. ## More apps by Taylor Cascino - [Rep Track - Workout Tracker](https://appshunter.io/ios/app/rep-track-workout-tracker/id6759986590) - [Kitchen Counter](https://appshunter.io/ios/app/kitchen-counter/id6760856489) All apps by Taylor Cascino: https://appshunter.io/developer/1882107919 --- *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 2026-07-27.*