Supported Features
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VoiceOver
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Voice Control
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Larger Text
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Dark Interface
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Differentiate Without Color Alone
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Sufficient Contrast
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Reduced Motion
Contractor Calc Pro
20 Pro Calculators. One App.
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
20 construction calculators — framing, concrete, roofing, paint, fence, drywall, deck & more. Set your material prices for accurate on-site estimates. Works offline.
Stop juggling spreadsheets on the jobsite. Contractor Calc Pro puts 20 essential construction calculators in your pocket — instant material estimates with real costs.
FREE CALCULATORS
- Drywall Estimator — walls + ceiling sheets, screws, tape, mud & corner bead
- Stair Calculator — rise, run, stringer length with IRC code pass/fail
- Tap & Drill Chart — searchable UNC, UNF, Metric & NPT reference
UNLOCK PRO ($4.99 one-time — no subscription, ever)
- Gutter & Downspout — SMACNA sizing from roof area + rainfall
- Insulation R-Value — IRC 2021 requirements by climate zone
- Deck Materials — full BOM: boards, joists, posts, hardware, footings
- Rebar Calculator — slab, footing & wall modes with cut list
- Chimney & Flue — NFPA 211 flue sizing + materials
- Septic System — tank, drain field & trench sizing by soil type
- Spray Nozzle — GPA application rate + tank mix volumes
- Board Feet — lumber volume and cost by species
- Framing — stud count, plates, king/jack/cripple studs
- Concrete — slab & pier volume, cubic yards, 60/80 lb bag counts
- Roof Pitch — rafter length from pitch or angle
- Roof Area — sloped surface from building footprint
- Shingle Estimator — squares, bundles, underlayment, ridge cap
- Hip/Valley Rafter — hip run, rafter length, jack common difference
- Crown Moulding — compound miter angles for flat & nested cuts
- Paint — gallons + primer from room dimensions
- Fence — posts, pickets, rails & concrete for any fence run
BUILT FOR THE JOBSITE
- Fraction input — type 5 1/2, 5' 6-1/2", or decimals
- Set your own material prices in Settings for accurate local estimates
- Save calculations by job name — recall them anytime
- Export professional PDF estimates to share with clients
- Tap & Drill favorites — pin the sizes you use most
- Calculate offline — no account, no tracking, no ads
- Optional iCloud Drive backup — keep your estimates, quotes, and prices safe when you switch phones, all in your own iCloud (only you can see it)
One payment. No subscription. No ads. No personal data collected — just anonymous usage diagnostics. Your estimates and quotes stay on your device, with optional backup to your own iCloud Drive that we never see.
Ratings & Reviews
- Improved launch reliability on iPad — the app now opens dependably on every device and the latest iPadOS.
The developer, ZIma Logistics LLC, 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:
- Usage Data
- Diagnostics
The developer indicated that this app supports the following accessibility features. Learn More
For more information, visit the developer’s accessibility website .
Information
- Seller
- Zima Logistics LLC
- Size
- 5.1 MB
- Category
- Utilities
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - Mac
Requires macOS 15.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Pro Unlock $4.99
- Copyright
- © 2026 Zima Logistics LLC