Build Specs
Jobsite Trade Calculators
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
Build Specs turns code charts into simple field tools for gas, water, stairs, decks, and voltage drop. Built for fast jobsite answers.
Build Specs turns code charts and sizing tables into simple field tools. More than just a calculator, it helps you lay out residential gas and water systems, size decks, calculate stair rise and runs, and check voltage drop.
Tools included:
**Stair Calculator**
Calculate risers, treads, stair count, total rise, and layout. Includes a detailed stringer cut diagram.
**Gas Line Sizer**
Build a visual gas piping layout with fixtures, BTU loads, pipe lengths, and sizing guidance.
**Water Line Sizer**
Lay out a water supply system visually and estimate pipe sizing based on fixtures and run lengths.
**Deck Joist & Beam Sizer**
Check common deck joist and beam sizing based on span, spacing, and lumber type.
**Voltage Drop Calculator**
Estimate voltage drop using wire size, distance, amperage, and voltage.
Always verify final designs with local codes, manufacturer specs, and qualified professionals when required.
Terms of Use (EULA): https://corvora.app/buildspecs/terms
Privacy Policy: https://corvora.app/buildspecs/privacy
Ratings & Reviews
Adds metric support to the Stair Calculator, including metric measurements and stringer length guidance.
The developer, Luke Kazmierowicz, 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
- Luke Kazmierowicz
- Size
- 59.8 MB
- Category
- Utilities
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPod touch
Requires iOS 15.1 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Build Specs Pro $39.99
- Build Specs Pro $9.99
- Copyright
- © 2026 Luke Kazmierowicz
