BuildCalc Lite
Sheet metal & pipe layout
$3.99 · Designed for iPad. Not verified for macOS.
CraftCalc puts professional fabrication calculations in your pocket, working fully offline with no signup needed. Get traceable results, clear visual diagrams, and flexible export options for sheet metal, plate work, and site layouts.
Trusted by sheet metal workers, platers, welders, pipefitters, duct installers, and steel erectors, CraftCalc delivers engineering-verified formulas you can check on the spot. Every computation runs locally on your device, keeping project data private and available even without a signal.
Core Calculations
Square-to-Round Transition
Triangulation development for concentric or eccentric transition pieces with true length tables.
Cone Frustum Layout
Annular sector development for concentric and offset frustums, including mean diameter correction notes.
90-Degree Elbow Segments
Lobster back cutting layout for segmented bends, ideal for ductwork and pipe fabrication.
Cable Tray Bends
Offset and horizontal bend notch calculations for cable tray installers and site technicians.
Spiral Blade Flight
Screw conveyor flight development for auger and spiral blade fabrication.
Visualisation and Data
Every result includes plan view and development diagrams, key dimension cards, and formula basis notes. Auto-saved records let you review recent jobs, while favourites keep go-to formulas ready. View, manage, or delete individual record details at any time.
Export and Share
Export single calculation results as images, or compile your full history into a PDF report. Share via email, messaging apps, or save directly to your files for project documentation.
Personalisation
Adjust decimal precision from 0 to 4 places to match your shop standards. Switch between metric and imperial units instantly. Formula version disclosure gives you full transparency on the calculation basis.
Why CraftCalc
- Works offline: reliable on remote sites with poor signal
- Privacy first: no personal data collection or upload
- Professionally sound: verified formulas for on-site checking
- Visually clear: modern interface with logical information hierarchy
Suitable Applications
Sheet metal development, plate layout, welding fabrication, pipefitting, ventilation duct installation, structural steel erection, and construction site measurement.
Disclaimer
Calculation results are for reference only. Always verify against actual site dimensions before cutting. The developer assumes no liability for project losses resulting from the use of these results.
CraftCalc, professional calculations in your pocket.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
What's New:
• Now supports iPad — layouts look better on larger screens
• Home screen tool icons adapt to screen width for quicker access
• Improved alignment and readability on wide displays
• Fixed display issues on tablets
The developer, 凌云 何, 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
- 凌云 何
- Size
- 5.2 MB
- Category
- Reference
- Compatibility
Requires iOS 16.0 or later.
- iPhone
Requires iOS 16.0 or later. - iPad
Requires iPadOS 16.0 or later. - Mac
Requires macOS 13.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 29 more
- English, Arabic, Czech, Danish, Dutch, Finnish, French, German, Greek, Hebrew, Hindi, Hungarian, Indonesian, Italian, Japanese, Korean, Malay, Norwegian Bokmål, Polish, Portuguese, Romanian, Russian, Simplified Chinese, Spanish, Swedish, Thai, Traditional Chinese, Turkish, Ukrainian, Vietnamese
- Age Rating
4+
- 4+
- Copyright
- Copyright © 2026 . 匠算 All rights reserved.
