# Chalk: Construction Calculator — Metric, Feet & Inches, Stairs > Construction calculator for metric and imperial units with trade-specific tools and AI advisor. (iPhone/iPad app by Lionary LLC.) - Source: https://appshunter.io/ios/app/chalk-construction-calculator/id6790033351 (this page in markdown: same URL + `.md`) - Developer: [Lionary LLC](https://appshunter.io/developer/1049490654) - Category: Utilities, Productivity - Price: Free with in-app purchases - Rating: 5.00/5 from 2 App Store ratings - Age rating: 4+ - Requires: iOS 26.0 · 19 MB - Languages: American English - Released: 2026-07-20 - Data updated: 2026-08-19 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/chalk-construction-calculator/id6790033351/reviews.md ## What is Chalk? Chalk is the construction calculator that speaks your units. Metric first, flawless in feet and inches, and every result shown in both so nothing on site gets lost in translation. Type measurements the way you say them. The purpose-built keypad takes 5 ft 3 1/2 in one line, with one-tap fraction keys or 2.45 m, or even a mix of both. No more converting in your head, no more decimal-feet guesswork. THE TOOLBOX • Stairs — risers, going, stringer length, angle and code check • Rafters & Roof — common and hip/valley lengths from span and pitch • Concrete — slabs, footings and post holes, with bag counts • Framing & Studs — stud counts and plate lineal for any wall • Drywall — sheets, screws, compound and tape • Tiling — tiles, adhesive and grout, waste included • Brick & Block — UK, AU and US sizes, plus mortar • Decking — board rows, lineal length and fixings • Board Feet — lumber volume and cost • Equal Spacing & Balusters — even layouts that meet code • Aggregates — gravel, sand, soil and asphalt by volume and tonnes • Running Measurements — layout tables from a start and interval • Chalk Pad — a full-size dimensional calculator with memory and rafter keys • Plus a tape calculator, triangle solver, area & volume, pitch & slope, square check and a full unit converter ASK THE ADVISOR Chalk's AI Advisor talks the job through — quantities, materials, layout and sequencing. Attach a saved project and it works with your exact numbers. (The Advisor needs a connection; every calculator stays 100% offline.) BUILT FOR THE SITE • Works fully offline — no signal, no account, no ads • Clear diagram on every calculator • Saved projects keep every number with the job it belongs to • Adjustable fraction precision down to 1/64″ • Rounded, glanceable results you can read in the sun MADE FOR Carpenters, builders, concreters, bricklayers, renovators and serious DIYers — anywhere metric and imperial meet. Chalk Pro unlocks all trade calculators and saved projects. Subscriptions renew automatically until cancelled. Estimates only — always verify quantities before ordering. Privacy: https://chalkcalc.com/privacy Terms: https://chalkcalc.com/terms Support: support@chalkcalc.com ## Key features - Metric and imperial unit support - Specialized trade calculators (stairs, rafters, concrete, etc.) - AI Advisor for job guidance - Offline functionality - Adjustable fraction precision - Saved projects ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Chalk Pro Weekly | $2.99 | per 7 days | | Chalk Pro Yearly | $17.99 | per year | ## Frequently asked questions about Chalk ### Does Chalk have ads? No, Chalk is ad-free. The app is designed to work fully offline without requiring a signal or an account, and it does not contain advertisements. ### What is the pricing for Chalk Pro? Chalk Pro unlocks all trade calculators and saved projects. Subscriptions renew automatically until cancelled. Specific pricing details for Chalk Pro are available within the app. ### How often is Chalk updated? Chalk was last updated on 2026-07-20 with version 1.0. Further update frequency information is not available, but the current release indicates a recent launch. ### What devices does Chalk support? Chalk is currently supported on iPhone devices. Information regarding Android or other platform compatibility is not provided. ### What is the age rating for Chalk? Chalk has an age rating of 4+. This indicates it is suitable for users of all ages, with no mature content. ### How does Chalk handle unit conversions? Chalk seamlessly handles both metric and imperial units, displaying results in both systems simultaneously. It features a purpose-built keypad for easy input of mixed units and fractions. ### Can Chalk be used without an internet connection? Yes, Chalk works fully offline. This means you can use all its calculator functions and features on any job site, regardless of signal availability. ### What kind of trade calculators are included in Chalk? Chalk includes specialized calculators for stairs, rafters, concrete, framing, drywall, tiling, brick & block, decking, board feet, equal spacing, aggregates, and running measurements. ## Version history (last 1 release) ### 1.0 — 2026-07-20 No release notes. ## More apps by Lionary LLC - [Picker AI - Best Photo Picker](https://appshunter.io/ios/app/picker-ai-best-photo-picker/id6448671716) - [Rizz Score - Dating Assistant](https://appshunter.io/ios/app/rizz-score-dating-assistant/id6503653797) - [Workout AI - Fitness Coach](https://appshunter.io/ios/app/workout-ai-fitness-coach/id6756196827) - [Pupti - Puppy Potty Log](https://appshunter.io/ios/app/pupti-puppy-potty-log/id6757993434) - [PottyStar - Potty Training](https://appshunter.io/ios/app/pottystar-potty-training/id6788585893) All apps by Lionary LLC: https://appshunter.io/developer/1049490654 --- *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 2026-08-19.*