Arc & Arch Layout Calculator
Mason Carpenter Setout Radius
$1.99 · Designed for iPad. Not verified for macOS.
Arc & Arch Layout Calculator is the precision toolkit every carpenter, joiner, mason, stonemason, builder and DIY enthusiast needs to lay out perfect arches and curves on any job — without complex trigonometry and without ever pulling string from a nail.
TWO PROFESSIONAL CALCULATORS IN ONE APP
Large Arc Layout
Set out a large-radius arc inside any confined space — an opening, a wall, a panel or a curved trim run. Enter the chord width plus either the rise (height) or radius and instantly see:
• Sweep angle, arc length, slice and full-circle area
• Inside arc mark-out — heights every increment from chord centre out
• Outside arc mark-out with optional outer offset
• An interactive set-out diagram you can pinch to zoom and drag to pan
• A printable template with automatic A4, Letter, A3, A2 and A1 page-fit guidance
• A bonus calculator that derives width, height, length and area from radius and sweep angle
Gothic Arch Layout
Design true masonry arches with mathematical precision. Choose equilateral, lancet or drop arches — the app classifies them automatically — and instantly receive every dimension you need:
• Inner and outer radius, inner and outer height
• Triangle chord and triangle drop for the gothic set-out
• Intrados and extrados arc lengths
• Setout mark-out heights from centre out
• Voussoirs: full unit count per side, inner and outer arc per voussoir, plus a dedicated keystone diagram
• Optional full-scale keystone and voussoir templates ready to print
EVERY MEASUREMENT, METRIC OR IMPERIAL
Every input switches instantly between Metric (mm) and Imperial (feet, inches and 1/16 to 15/16 fractions). Imperial inputs use clean three-wheel pickers — feet, inches, fraction — so a 6 ft 3 1/2 in chord takes seconds.
INTERACTIVE DIAGRAMS YOU CAN ACTUALLY READ
Every calculation is paired with a crisp, vector-quality diagram. Pinch to zoom, drag to pan, double-tap to fit, and use the live measure tool to read distances off the drawing.
EXPORT TO PDF FOR THE WORKSHOP
One tap exports a complete multi-page PDF: a tidy summary page with all your inputs and results, followed by every diagram on its own page — perfect for printing the template at full scale or sharing with the team.
NATIVE iOS DESIGN
• Built with SwiftUI for iPhone and iPad
• Works completely offline
• Saves your last inputs automatically
• No accounts, no subscriptions, no ads
• Respects Dynamic Type and Dark Mode
Stop guessing. Calculate, lay out, print and build — accurately, every time.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Vladislav Zhirnov, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Vladislav Zhirnov
- Size
- 8.2 MB
- Category
- Utilities
- Compatibility
Requires iOS 17.6 or later.
- iPhone
Requires iOS 17.6 or later. - iPad
Requires iPadOS 17.6 or later. - Mac
Requires macOS 14.6 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.3 or later.
- iPhone
- Languages
English and 32 more
- English, Arabic, Croatian, Czech, Danish, Dutch, Finnish, French, German, Greek, Hebrew, Hindi, Hungarian, Indonesian, Italian, Japanese, Korean, Malay, Norwegian Bokmål, Polish, Portuguese, Romanian, Russian, Simplified Chinese, Slovak, Slovenian, Spanish, Swedish, Thai, Traditional Chinese, Turkish, Ukrainian, Vietnamese
- Age Rating
4+
- 4+
- Copyright
- © zhirnov.zsystems
