TB Logic
Smart tools for Construction
Free · In‑App Purchases · Designed for iPad. Not verified for macOS.
Tool Belt Logic is the jobsite calculator built for framers, concrete crews, and GCs - fast, simple, and made for dirty gloves.
Free to use:
- Construction calculator with feet-inch-fraction math
- Tap-to-reuse running tape so you never lose a number
Tool Belt Logic Pro unlocks:
- Smart formulas: Rake Wall, Arch Wall, Stair Layout, Hip/Valley, Circle, Concrete Volume, and more - each with a clear cut list and a to-scale diagram
- AI Chat that answers jobsite math in plain language
- Learning Mode field tips
- Save and share your work
- English and Spanish
No clutter, no fluff - just the numbers you need to build it right the first time.
Ratings & Reviews
Bug fix: corrected a case where a negative number could lose its minus sign during a calculation (for example, -0.27 x 1000 now correctly shows -270).
The developer, Chill Inc, 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 Linked to You
The following data may be collected but it is not linked to your identity:
- Purchases
- User Content
- Identifiers
- Usage Data
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Chill Inc
- Size
- 53.2 MB
- Category
- Utilities
- Compatibility
Requires iOS 15.1 or later.
- iPhone
Requires iOS 15.1 or later. - iPad
Requires iPadOS 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.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Tool Belt Logic Pro $5.99
- Tool Belt Logic Pro (Yearly) $65.99
- Copyright
- © 2026 Chill Inc