# CDL Prep Test 2026 vs ISA Exam Prep

The clearest difference is in-app purchases: CDL Prep Test 2026 at none against ISA Exam Prep's 3. CDL Prep Test 2026 also leads on ratings volume (15K vs 2) and device support (3 vs 1). ISA Exam Prep's advantage is ads (none vs shown) and update cadence (every 3 weeks vs every 5 months). On price and rating there is nothing between them.

Both are free to download. ISA Exam Prep sells 3 in-app purchases, starting at $2.99 per 7 days. CDL Prep Test 2026 asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.9 for CDL Prep Test 2026 against 5.0 for ISA Exam Prep. That said, the two scores are not equally well evidenced: CDL Prep Test 2026 has 15K ratings behind it against 2, so its average is the more settled of the two.

CDL Prep Test 2026 ships an update every 5 months, ISA Exam Prep every 3 weeks. The most recent releases landed on October 21, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | CDL Prep Test 2026 | ISA Exam Prep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (15K ratings)](https://appshunter.io/ios/app/cdl-prep-test-2026/id1464409838/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/isa-exam-prep/id6746368020/reviews)** |
| Number of ratings | **15K** | 2 |
| Positive reviews | 93.5% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 5 months | **Every 3 weeks** |
| Monetization | **Free with in-app purchases** | Subscription |
| Size | 13 MB | 1 MB |
| Requires iOS | **15.6** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Wei Zhang](https://appshunter.io/developer/1021151045) | [Nikhil Kumar](https://appshunter.io/developer/1783391273) |

## What reviewers say

### CDL Prep Test 2026

[App page](https://appshunter.io/ios/app/cdl-prep-test-2026/id1464409838)

Prepare for your Commercial Driver's License written test with this efficient app. It offers comprehensive question sets for all 50 states, simulating the actual testing environment to help you pass easily.

**Highlights:** State-specific question sets, Test mode simulation, Starred/bookmarked questions, Cramming mode for quick review, Covers all 50 US states

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Accurate and helpful for passing tests
- 👍 User-friendly interface
- 💡 Useful features like flagging questions
- 🚀 Comprehensive coverage of test material

**What reviewers complain about**

- 🐛 Some grammatical errors and confusing questions
- 🐛 Occasional reliability issues with answers

**Reported bugs**

- Repeated questions within the same practice session
- Inconsistent scoring on practice tests

**Requested features**

- Ability to report errors in questions
- More state-specific content
- Expanded coverage for endorsements like Metal


### ISA Exam Prep

[App page](https://appshunter.io/ios/app/isa-exam-prep/id6746368020)

Prepare for the ISA Certified Arborist exam with a comprehensive study system. Features over 500 questions, personalized study plans, mock exams, and AI-powered performance analysis. Study anywhere with offline access and track your progress across devices.

**Highlights:** 500+ specialized arboriculture questions, Personalized study plans, Realistic mock exams, AI-powered performance analysis, Offline access, Progress synchronization

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Isa Exam Prep Premium | $2.99 | per 7 days |
| Isa Exam Prep Premium | $39.99 | per year |
| LifeTime | $39.99 | one-time |


## Frequently asked questions

### Is CDL Prep Test 2026 free?

CDL Prep Test 2026 is free to download, with no in-app purchases.

### Is ISA Exam Prep free?

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

### Which has better reviews, CDL Prep Test 2026 or ISA Exam Prep?

ISA Exam Prep is rated higher. CDL Prep Test 2026 averages 4.9 out of 5 from 15K ratings, while ISA Exam Prep averages 5.0 from 2 ratings.

### Do CDL Prep Test 2026 or ISA Exam Prep have ads?

CDL Prep Test 2026 shows ads; ISA Exam Prep does not.

### Which is updated more often, CDL Prep Test 2026 or ISA Exam Prep?

CDL Prep Test 2026 ships an update every 5 months, and ISA Exam Prep every 3 weeks. Most recently, CDL Prep Test 2026 was updated on October 21, 2026 and ISA Exam Prep on October 6, 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.*