# CSLB C vs Contractor License Prep

The clearest difference is update cadence: Contractor License Prep at every 6 weeks against CSLB C's every 5 months. Contractor License Prep also leads on rating (5.0 vs 4.8). CSLB C's advantage is ratings volume (9 vs 3) and iOS requirement (15.1 vs 17.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. CSLB C sells 9 in-app purchases, starting at $8.99 per 7 days 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.

Contractor License Prep holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 9 and 3 respectively.

CSLB C ships an update every 5 months, Contractor License Prep every 6 weeks. The most recent releases landed on October 23, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | CSLB C | Contractor License Prep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (9 ratings)](https://appshunter.io/ios/app/cslb-c-39-roofing-test-prep/id6747896465/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/contractor-license-prep/id6763968210/reviews)** |
| Number of ratings | **9** | 3 |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 6 weeks** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 53 MB | 7 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [YAUHEN BAHDANOVICH](https://appshunter.io/developer/1711932790) | [Deeun Inc.](https://appshunter.io/developer/1691824695) |

## What reviewers say

### CSLB C

[App page](https://appshunter.io/ios/app/cslb-c-39-roofing-test-prep/id6747896465)

Prepare for the C-39 Roofing Contractor License Exam with up-to-date materials for 2026. Access an extensive question bank, detailed explanations, and progress tracking to hone your skills. Features include customizable study plans and simulated exam modes for comprehensive preparation.

**Highlights:** Up-to-date for 2026, Extensive question bank, Detailed explanations, Progress tracking, Simulated exam mode, Customizable study plans

**Features:** macOS Compatibility

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CLSB C-39 Weekly Full Access | $8.99 | per 7 days |
| C-39 Monthly Full Access | $24.99 | per month |
| CLSB C-39 Monthly Full Access | $24.99 | per month |
| C-39 Quarterly Full Access | $55.99 | per 3 months |
| C-39 Quarterly Full Access | $55.99 | per 3 months |
| C-39 Semiannual Full Access | $75.99 | per 6 months |
| C-39 Semiannual Full Access | $79.99 | per 6 months |
| C-39 Annual Full Access | $109.99 | per year |
| C-39 Annual Full Access | $119.99 | per year |


### Contractor License Prep

[App page](https://appshunter.io/ios/app/contractor-license-prep/id6763968210)

Prepare for your general contractor license exam with practice questions and specialized calculators. Master bid estimation, lien deadlines, and workers' compensation calculations to improve your first-attempt pass rate.

**Highlights:** Bid Estimator with cost breakdown, Lien Deadline Calculator for all major states, Bond and Workers Comp Calculator, 1,000+ practice questions, Detailed explanation for each question, Covers business, law, project management, safety, and building codes

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Access | $9.99 | per month |
| Annual Access | $24.99 | per year |
| Contractor License Prep Lifetime | $49.99 | one-time |


## Frequently asked questions

### Is CSLB C free?

CSLB C 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.

### Which has better reviews, CSLB C or Contractor License Prep?

Contractor License Prep is rated higher. CSLB C averages 4.8 out of 5 from 9 ratings, while Contractor License Prep averages 5.0 from 3 ratings.

### Do CSLB C or Contractor License Prep have ads?

Neither CSLB C nor Contractor License Prep shows ads.

### Which is updated more often, CSLB C or Contractor License Prep?

CSLB C ships an update every 5 months, and Contractor License Prep every 6 weeks. Most recently, CSLB C was updated on October 23, 2026 and Contractor License Prep on October 25, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*