# CDL Permit vs KnowledgeVine

The clearest difference is in-app purchases: KnowledgeVine at none against CDL Permit's 3. KnowledgeVine also leads on ads (none vs shown). CDL Permit's advantage is iOS requirement (13.0 vs 15.1). On price, update cadence and device support there is nothing between them.

Both are free to download. CDL Permit sells 3 in-app purchases, starting at $9.99 per month. KnowledgeVine asks for nothing beyond the download.

CDL Permit ships an update monthly, KnowledgeVine every 2 months. The most recent releases landed on October 16, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | CDL Permit | KnowledgeVine |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (18K ratings)](https://appshunter.io/ios/app/cdl-permit-practice-test-2026/id1566343337/reviews)** | — |
| Number of ratings | **18K** | — |
| Positive reviews | 46.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Monthly** | Every 2 months |
| Monetization | Free with in-app purchases | — |
| Size | 36 MB | 26 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Mapola LTD](https://appshunter.io/developer/1566343339) | [Knowledge Vine, LLC](https://appshunter.io/developer/1325657464) |

## What reviewers say

### CDL Permit

[App page](https://appshunter.io/ios/app/cdl-permit-practice-test-2026/id1566343337)

Prepare for your 2026 Commercial Driver's License (CDL) exam with comprehensive study materials. Access state-specific rules and knowledge domains for various vehicle types. Offers premium features for enhanced practice.

**Highlights:** State-specific CDL rules, Multiple knowledge domains, General knowledge study, Specialized vehicle prep, Random exam mode, Timed quiz option, Incorrect questions review

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly w Trial, Special Offer | $9.99 | per month |
| CDL Prep Practice Test 2023 | $24.99 | per month |
| Lifetime | $99.99 | one-time |

**What reviewers like**

- 👍 Helpful for passing CDL tests
- 💡 Provides a lot of practice questions
- 🚀 Effective study tool
- 🚀 Closest to actual test questions

**What reviewers complain about**

- 🐛 Repeated questions in tests
- 🐛 Incorrect or misleading questions/answers
- 💰 Subscription required to access full content
- 🐛 App crashes and connection issues

**Reported bugs**

- Answer choices cut off
- Flashcards not working
- Subscription issues (unable to cancel, still charged)

**Requested features**

- State-specific question banks
- Ability to report incorrect questions
- More varied and up-to-date question pool


### KnowledgeVine

[App page](https://appshunter.io/ios/app/knowledgevine/id1637147448)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is CDL Permit free?

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

### Is KnowledgeVine free?

KnowledgeVine is free to download, with no in-app purchases.

### Do CDL Permit or KnowledgeVine have ads?

CDL Permit shows ads; KnowledgeVine does not.

### Which is updated more often, CDL Permit or KnowledgeVine?

CDL Permit ships an update monthly, and KnowledgeVine every 2 months. Most recently, CDL Permit was updated on October 16, 2026 and KnowledgeVine on October 3, 2026.

---

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