General Contractor LicenseExam
General Contractor Toolbox
$2.99 · Designed for iPad. Not verified for macOS.
12 jobsite calculators, a 75-term glossary, exam-day countdown, and full Business & Law / Trade mock simulations. Built for working contractors, not just test takers.
This app is the working contractor's pocket reference — twelve construction calculators, a searchable glossary, and full mock exams in one app. Whether you're sizing a rebar order at the supply yard or grinding through your last week of license prep, the toolbox is built around the math and lookups you actually do every day.
WHAT'S INSIDE
12 jobsite calculators
- Concrete volume — slabs, footings, columns, with a waste factor
- Rebar weight & length — by ASTM bar size
- Lumber board-feet — from nominal dimensions
- Roof pitch & rafter — span, slope, ridge height, rafter length
- Stair layout — riser/tread/stringer with IRC code check
- Drywall & paint — sheets and gallons by coverage
- Excavation — bank vs loose volume and truck loads
- Markup ↔ margin converter
- Bid pricing — direct cost + GCs + overhead + profit stack
- Earned value — CPI, SPI, and EAC from PV / EV / AC
- Labor hours — quantity × productivity factor
- Anchor bolts — sill-plate count from wall length
Plan & Practice
- Personalized exam-day countdown
- Daily drill that builds a study streak
- Practice by domain across 15 knowledge areas
- Filter by section (Business & Law / Trade), scope (Residential / Commercial), or experience tier (Fundamentals / Advanced)
- Per-domain accuracy analytics highlight your weakest areas
Searchable Glossary
A hand-curated reference of 75+ construction and contracting terms. Plain-language definitions, source references (NASCLA, IBC, OSHA, NEC, ACI, AISC, NFPA, AIA), and an alphabet rail for instant jump.
Flashcard Mode
A separate UX from the quiz runner — tap to flip, self-grade Got it / Need work. Useful for high-frequency facts you need to recall in the testing center.
Mock Exam Simulator
Full-length timed simulations matching the two scored sections most state boards and the NASCLA Accredited Commercial General Building exam administer:
- Business & Law: 50 questions, 2 h 45 m, ≥ 70% to pass
- Trade / Building: 115 questions, 5 h 30 m, ≥ 72% to pass
Bookmark items, jump freely with the navigator, and review a per-domain breakdown after submit.
WHO IT'S FOR
- Working general contractors who need quick math and lookups in the field
- Candidates preparing for the NASCLA Accredited Commercial General Building exam
- State GC license applicants (most boards mirror NASCLA + local amendments)
- Project managers and superintendents brushing up on codes and contracts
- Estimators who'd rather not pull out a notebook for every takeoff
- Construction-management students
QUIET, OFFLINE, AD-FREE
- 100% offline after install
- No account required, no trackers, no advertising
- Practice history stays only on your device
- Universal app — iPhone and iPad, portrait and landscape
REFERENCES
Content is original to this app and aligns with widely-used construction industry sources: NASCLA Contractors Guide, OSHA 29 CFR 1926, the ICC family (IBC, IRC), NFPA 70 (NEC), NFPA 13, ACI 318, AISC Steel Construction Manual, AIA A201 general conditions, and ConsensusDocs 200.
A NOTE BEFORE YOU TEST
Licensing rules, adopted code editions, approved references, and passing scores vary by jurisdiction. Confirm current requirements with your state or local licensing board. GC Toolbox is a study aid and field reference — not legal, financial, engineering, or licensing advice.
Build smart. Pull the right number on the first try.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
A complete rebuild. This app is now a working contractor's pocket reference — 12 jobsite calculators, a searchable glossary, a study dashboard, and full mock exam simulations.
What's new:
- 12 calculators: concrete, rebar, lumber, roof pitch, stair, drywall, excavation, markup–margin, bid pricing, earned value, labor, anchor bolts
- Searchable construction glossary
- Flashcard study mode
- Daily-drill dashboard with exam-day countdown
- Redesigned 5-tab layout and visual style
The developer, Yuhsiu Lai, 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
- Yuhsiu Lai
- Size
- 5.7 MB
- Category
- Education
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - iPad
Requires iPadOS 17.0 or later. - Mac
Requires macOS 14.0 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
- © 2026 iTech Tools
