Comparison

NASCLA Test Prep vs Contractor License Prep

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

NASCLA Test Prep

Features
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NASCLA Test Prep The official test prep app NASCLA. Prepare with the only NASCLA-approved practice test designed to match the real exam. Features: Custom Study Session - Generate custom study sessions by topic and mastery Post-Test Review – See your results, review questions, and learn from detailed explanations. Track Your Progress – Identify strengths and areas for improvement. More Coming Soon – Additional tests and study resources on the way—stay tuned!

About

Contractor License Prep

Features
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CONTRACTOR LICENSE PREP: PASS YOUR STATE GENERAL CONTRACTOR EXAM The general contractor license exam combines business and law, construction safety, project management, and building codes in one sitting. Most states have a first-attempt pass rate under 60 percent. Candidates who fail are typically weak in three areas: lien law deadlines, bid and markup math, and workers compensation calculation. This app is built around those three gaps with the professional calculators no other exam prep app offers. BID ESTIMATOR Every licensed contractor builds bids. Knowing bid math is tested on every contractor licensing exam. Enter material costs with waste factors, labor hours and rates, equipment costs, subcontractor amounts, overhead percentage, profit margin, and contingency. Get total bid, cost breakdown by category, markup vs margin analysis, and a formatted bid summary. Save and compare multiple scenarios. The difference between markup and margin alone has failed thousands of exam candidates. This tool teaches you both before exam day. LIEN DEADLINE CALCULATOR Mechanic lien law is one of the most heavily tested and most commonly failed topics on contractor exams. In real life, missing a deadline means permanently losing your right to file. Enter your project start date and state to get every critical deadline: preliminary notice (20 to 60 days depending on state and role), mechanic lien filing (60 to 120 days), lien release and waiver deadlines, and state-specific rules for subcontractors vs prime contractors. Covers all major states: California, Texas, Florida, New York, Illinois, Arizona, Georgia, North Carolina, and Washington. BOND AND WORKERS COMP CALCULATOR Licensing exams test bonding requirements and workers comp premiums. Candidates who cannot calculate a premium from payroll and a classification rate fail these questions consistently. Workers comp: premium equals payroll divided by 100 times classification rate, adjusted by EMR. License bond: required amounts by class, surety vs cash. General liability: per-occurrence vs aggregate limits. 1,000+ PRACTICE QUESTIONS BUSINESS AND LAW (35%): Mechanic lien law, contract law, business structures, workers comp coverage and penalties, bonding types, insurance requirements, employment law, dispute resolution. PROJECT MANAGEMENT (25%): Estimating and bidding, critical path and float, change orders, subcontractor management, project documentation, earned value basics. CONSTRUCTION SAFETY (20%): OSHA regulations, fall protection trigger heights, excavation soil classification and shoring, scaffolding, electrical safety, LOTO, hazard communication. BUILDING CODES AND TRADE KNOWLEDGE (20%): IBC and IRC fundamentals, permit and inspection sequence, plan reading, concrete and framing basics, energy codes. Every question includes a detailed explanation covering why the correct answer is right and why the wrong answers are wrong. FREE: 5 questions per day. Basic bid calculator. 3 lien states. No account required. PASS PROMISE: Complete all questions with 80% or higher average, hold active subscription for 3 months, still do not pass. We extend your access by 4 months at no charge. voltexam.com/pass-promise Not affiliated with any state contractor licensing board, PSI Services, Pearson VUE, or NASCLA. Licensing requirements and lien deadlines vary by state. Not legal or financial advice. Privacy Policy: https://www.voltexam.com/privacy Terms of Service: https://www.voltexam.com/terms

Screenshots

NASCLA Test Prep4 screens
Contractor License Prep4 screens

Verdict

The call

NASCLA Test Prep and Contractor License Prep are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. NASCLA Test Prep sells 4 one-off in-app purchases and Contractor License Prep sells 3 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

NASCLA Test Prep ships an update every 2 months, Contractor License Prep every 6 weeks. The most recent releases landed on October 12, 2026 and October 24, 2026 respectively.

ScorecardNo meaningful differences
NASCLA Test Prep versus Contractor License Prep: the parameters behind the verdict, then further details
ParameterNASCLA Test PrepContractor License Prep
PriceFreeFree
Rating—5.0 (2 ratings) — better
Number of ratings—2 — better
Update frequencyEvery 2 monthsEvery 6 weeks — better
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad — betteriPhone
Requires iOS16.4 — better17.0
Further details — not scored
Size120 MB7 MB
Age rating17+4+
DeveloperMemorangDeeun Inc.

In-app purchases

4 purchases

NASCLA Test Prep

One-time4
  • Commercial Building Contractor$149.00
  • Commercial Building Contractor$200.00
  • Commercial Building Contractor$249.00
Show 1 more
  • Commercial Building Contractor$300.00
3 purchases

Contractor License Prep

Subscriptions2
  • Monthly Access3 Days trial$9.991 Month
  • Annual Access$24.991 Year
One-time1
  • Contractor License Prep Lifetime$49.99

Questions

Is NASCLA Test Prep free?
NASCLA Test Prep is free to download, with in-app purchases available.
Is Contractor License Prep free?
Contractor License Prep is free to download, with in-app purchases available.
Do NASCLA Test Prep or Contractor License Prep have ads?
Neither NASCLA Test Prep nor Contractor License Prep shows ads.
Which is updated more often, NASCLA Test Prep or Contractor License Prep?
NASCLA Test Prep ships an update every 2 months, and Contractor License Prep every 6 weeks. Most recently, NASCLA Test Prep was updated on October 12, 2026 and Contractor License Prep on October 24, 2026.

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