# CDL Prep vs RandyAI

The clearest difference is ads: RandyAI at none against CDL Prep's shown. RandyAI also leads on rating (5.0 vs 4.6) and review sentiment (100% vs 80%). CDL Prep's advantage is ratings volume (3.4K vs 5) and chart position (#154 vs unranked). On price, update cadence, in-app purchases and monetization model there is nothing between them.

Both are free to download. CDL Prep sells 5 in-app purchases, starting at $24.99 per month and RandyAI sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

RandyAI holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: CDL Prep has 3.4K ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 80% of CDL Prep's written reviews are positive against 100% of RandyAI's.

CDL Prep ships an update every 3 months, RandyAI every 2 months. The most recent releases landed on October 24, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | CDL Prep | RandyAI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (3.4K ratings)](https://appshunter.io/ios/app/cdl-prep-practice-test-2026/id6446039122/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/randyai/id6752505326/reviews)** |
| Number of ratings | **3.4K** | 5 |
| Positive reviews | 79.9% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free with in-app purchases | Freemium |
| Best chart rank | **#154** | — |
| Size | 99 MB | 41 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Best Fun Games](https://appshunter.io/developer/896888007) | [RenAIssance Labs, LLC](https://appshunter.io/developer/1839570709) |

## What reviewers say

### CDL Prep

[App page](https://appshunter.io/ios/app/cdl-prep-practice-test-2026/id6446039122)

**Currently charting:** #154 Top Grossing · Education (US App Store)

Prepare for your Commercial Driver's License (CDL) exam with over 1,600 practice questions covering all essential sections. Features a personalized study plan, readiness score, and detailed explanations to help you pass on your first attempt.

**Highlights:** 1,600+ expert-written practice questions, Comprehensive CDL exam section coverage, Personalized study plan, Readiness score, Detailed explanations for questions, Flashcards, Progress tracking

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium monthly subscription | $24.99 | per month |
| Premium annual subscription | $59.99 | per year |
| Lifetime premium access | $59.99 | one-time |
| Lifetime premium access | $74.99 | one-time |
| Lifetime premium access | $89.99 | one-time |

**What reviewers like**

- 🚀 Helpful for passing CDL tests
- 👍 Easy to use and navigate
- 💡 Variety of test options
- 🚀 Effective for preparing for endorsements
- 👍 Explanations for answers

**What reviewers complain about**

- 🐛 Some questions not matching actual test
- 🔒 Difficult to cancel subscription
- 💰 Expensive subscription
- 🐛 Repetitive questions

**Reported bugs**

- Unexpected charges after free trial
- Frequent prompts to leave reviews

**Requested features**

- More study materials and modules
- Better alignment with state-specific requirements
- Ability to flag/review missed questions


### RandyAI

[App page](https://appshunter.io/ios/app/randyai/id6752505326)

This app helps water and wastewater professionals prepare for certification exams and understand plant operations. It offers state-specific practice questions, an AI-powered study assistant for complex topics, and troubleshooting support for equipment. Learn and retain critical concepts with interactive lessons and quizzes, accessible offline.

**Highlights:** State-specific exam preparation, AI-powered study assistant, Troubleshooting support for plant operations, Interactive lessons and quizzes, Offline mobile learning, Operator-developed content

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Randy Pro - Monthly | $4.99 | per month |
| Randy Pro - Yearly | $44.99 | per year |


## Frequently asked questions

### Is CDL Prep free?

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

### Is RandyAI free?

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

### Which has better reviews, CDL Prep or RandyAI?

RandyAI is rated higher. CDL Prep averages 4.6 out of 5 from 3.4K ratings, while RandyAI averages 5.0 from 5 ratings.

### Do CDL Prep or RandyAI have ads?

CDL Prep shows ads; RandyAI does not.

### Which is updated more often, CDL Prep or RandyAI?

CDL Prep ships an update every 3 months, and RandyAI every 2 months. Most recently, CDL Prep was updated on October 24, 2026 and RandyAI on October 17, 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.*