Towronix
Pro Builder Calculator
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
Towronix is the go-to construction calculator for residential builders, carpenters, and contractors. Design code-compliant staircases, plan decks from framing to finish, and look up span tables and lumber specs — all in one fast, intuitive app built for the job site.
Stair design starts with your total rise and riser count. Towronix instantly generates a complete cut sheet with a visual stringer diagram and runs a live safety check against residential code thresholds — riser height, tread depth, headroom clearance, and the 2R+T comfort formula. Warnings and critical flags surface problems before you cut a single board, and a one-tap export sends the finished cut sheet straight to your photo library.
Deck planning is just as fast. Build a full deck worksheet in minutes: Towronix sizes joists and beams by species, spacing, and span; calculates posts, footings, and railing layout; and produces a grouped material takeoff list ready to hand to the lumber yard. Whether you're framing a ground-level platform or a multi-level deck with a ledger attachment, Towronix handles every number so you can focus on the build.
The built-in Reference library gives you instant access to joist and beam span tables, nominal vs. actual lumber dimensions, a board-foot calculator, fraction-to-decimal and inch-to-metric converters, and a concrete bag estimator for slabs, tubes, and pads. Save stair and deck calculations to named projects, attach job-site photos, and pull everything back up on your next visit. Supports both imperial and metric units with selectable fraction precision (1/4", 1/8", 1/16").
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
Minor UI fixes
Performance improvements
The developer, Yaroslava Chopik, 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
- Yaroslava Chopik
- Size
- 41.3 MB
- Category
- Utilities
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPod touch
Requires iOS 15.0 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+
- Copyright
- © Yaroslava Chopik