# Math.Brain vs CDL Prep 

Math.Brain and CDL Prep  both sit at 4.8 stars, but that hides the real split: 100% of CDL Prep 's written reviews are positive against 50% of Math.Brain's. CDL Prep  also leads on ads (none vs shown) and device support (3 vs 1). On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. Math.Brain sells 6 in-app purchases, starting at $12.99 per 7 days and CDL Prep  sells 4 in-app purchases, starting at $7.99 per 7 days. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.8 for Math.Brain against 4.8 for CDL Prep . Both are backed by a comparable volume of ratings — 91 and 76 respectively. Written reviews are what separate them: 50% of Math.Brain's written reviews are positive against 100% of CDL Prep 's.

Math.Brain ships an update every 8 days, CDL Prep  every 11 days. The most recent releases landed on October 9, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Math.Brain | CDL Prep  |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (91 ratings)](https://appshunter.io/ios/app/mathbrain-ai-homework-helper/id6744367490/reviews) | [4.8 (76 ratings)](https://appshunter.io/ios/app/cdl-prep/id6749817521/reviews) |
| Number of ratings | **91** | 76 |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 8 days** | Every 11 days |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 33 MB | 129 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [COMPREHENSIVE SOLUTIONS FOR DIGITAL MARKETING AND SOFTWARE DEVELOPMENT LIMITED](https://appshunter.io/developer/6776636491) | [KAHA INNOVATION COMPANY LIMITED](https://appshunter.io/developer/1807437678) |

## What reviewers say

### Math.Brain

[App page](https://appshunter.io/ios/app/mathbrain-ai-homework-helper/id6744367490)

This AI-powered tool simplifies complex subjects like algebra and geometry with step-by-step explanations and instant answers. It adapts to your learning style, offering personalized guidance to help you study smarter and reduce homework stress.

**Highlights:** AI-powered explanations, Step-by-step problem solving, Instant answers, Personalized learning, Smart scanner, AI chat support

**Features:** Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Math.Brain: AI Homework Helper | $12.99 | per 7 days |
| Math.Brain: AI Homework Helper | $12.99 | per 7 days |
| Math.Brain: AI Homework Helper | $14.99 | per month |
| Math.Brain: AI Homework Helper | $15.99 | per month |
| Math.Brain: AI Homework Helper | $83.99 | per year |
| Math.Brain: AI Homework Helper | $99.99 | per year |


### CDL Prep 

[App page](https://appshunter.io/ios/app/cdl-prep/id6749817521)

Prepare for your Commercial Driver’s License (CDL) exam with a comprehensive and user-friendly app. It offers realistic simulations, flashcards, and AI-powered assistance to help you master all 50 states' requirements. Updated for 2025, it covers all necessary subjects for commercial drivers.

**Highlights:** Real exam simulation, Flashcards for memorization, AI Coach for questions, Traffic sign scanner, Progress tracking, Detailed explanations, Updated for 2025

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $7.99 | per 7 days |
| Weekly Trial | $7.99 | per 7 days |
| Monthly Trial | $19.99 | per month |
| Monthly | $19.99 | per month |


## Frequently asked questions

### Is Math.Brain free?

Math.Brain is free to download, with in-app purchases available.

### Is CDL Prep  free?

CDL Prep  is free to download, with in-app purchases available.

### Which has better reviews, Math.Brain or CDL Prep ?

Math.Brain and CDL Prep  are both rated 4.8 out of 5 on the App Store, from 91 and 76 ratings respectively.

### Do Math.Brain or CDL Prep  have ads?

Math.Brain shows ads; CDL Prep  does not.

### Which is updated more often, Math.Brain or CDL Prep ?

Math.Brain ships an update every 8 days, and CDL Prep  every 11 days. Most recently, Math.Brain was updated on October 9, 2026 and CDL Prep  on October 2, 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.*