# CDL Prep Practice Test Genie vs Lineman's Reference

The clearest difference is price: CDL Prep Practice Test Genie at Free against Lineman's Reference's $19.99. CDL Prep Practice Test Genie also leads on review sentiment (86% vs 62%) and ratings volume (14K vs 307). Lineman's Reference's advantage is in-app purchases (none vs 19) and chart position (#14 vs unranked). On rating, update cadence, ads and device support there is nothing between them.

CDL Prep Practice Test Genie is free to download; Lineman's Reference costs $19.99 up front. CDL Prep Practice Test Genie sells 19 in-app purchases, starting at $19.99 per 7 days. Lineman's Reference asks for nothing beyond the download.

CDL Prep Practice Test Genie holds the better App Store score, 4.8 against 4.6. That said, the two scores are not equally well evidenced: CDL Prep Practice Test Genie has 14K ratings behind it against 307, so its average is the more settled of the two. Written reviews point the same way: 86% of CDL Prep Practice Test Genie's written reviews are positive against 62% of Lineman's Reference's.

CDL Prep Practice Test Genie ships an update monthly, Lineman's Reference every 4 weeks. The most recent releases landed on October 23, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | CDL Prep Practice Test Genie | Lineman's Reference |
| --- | --- | --- |
| Price | **Free** | $19.99 |
| Rating | **[4.8 (14K ratings)](https://appshunter.io/ios/app/cdl-prep-practice-test-genie/id1447415467/reviews)** | [4.6 (307 ratings)](https://appshunter.io/ios/app/linemans-reference-xfmr-lab/id1583878194/reviews) |
| Number of ratings | **14K** | 307 |
| Positive reviews | **86.1% of reviews** | 62.2% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Monthly | **Every 4 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | — | **#14** |
| Size | 160 MB | 65 MB |
| Requires iOS | 17.0 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Elegant eLearning](https://appshunter.io/developer/497640353) | [Digital Apprentice LLC](https://appshunter.io/developer/1565687382) |

## What reviewers say

### CDL Prep Practice Test Genie

[App page](https://appshunter.io/ios/app/cdl-prep-practice-test-genie/id1447415467)

Prepare for your CDL permit and endorsement tests with an FMCSA-approved app. It offers ELDT theory certification, exam-level practice questions, and personalized study tools to help you pass your commercial driver's license exams.

**Highlights:** ELDT Theory Certification, FMCSA-approved training, Exam-level practice questions, Personalized Challenge Bank, Detailed explanations, Passing Probability score, Covers all CDL classes and endorsements

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

**In-app purchases (19)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CDL Exam Prep Weekly Access | $19.99 | per 7 days |
| CDL Premium All-in-one + ELDT | $39.00 | per month |
| CDL All-in-one Exam Prep | $39.99 | per month |
| CDL All-in-one Exam Prep | $49.99 | per month |
| CDL All-in-one Exam Prep | $49.99 | per month |
| CDL Premium 1-month | $49.99 | per month |
| “Non-ELDT Endorsements” 30-Day | $49.99 | per month |
| Class A CDL Exam Prep - 30 Days | $99.00 | per month |
| Class B to A ELDT + 30-DayExam | $99.00 | per month |
| Class B CDL Exam Prep - 30 Days | $99.99 | per month |
| Class C | $99.99 | per month |
| CDL Genie Premium | $14.99 | one-time |
| Class B ELDT Certification | $69.99 | one-time |
| Class A ELDT Certification | $69.99 | one-time |
| HazMat ELDT + 7-Day Exam Prep | $69.99 | one-time |
| School Bus ELDT + 7-Day Exam | $69.99 | one-time |
| CDL Premium Lifetime | $99.99 | one-time |
| HazMat ELDT + 30-DayExam Prep | $99.99 | one-time |
| Passenger ELDT + 30-Day Prep | $99.99 | one-time |

**What reviewers like**

- 🚀 Effective study tool
- 👍 Accurate to real exam questions
- 💡 Comprehensive coverage of topics
- 🚀 Efficient for passing tests
- 👍 Helpful for various endorsements

**What reviewers complain about**

- 🐛 Some questions not on the app
- 🔒 Difficult to cancel subscription
- 💰 Concerns about pricing and costs

**Reported bugs**

- Subscription issues and double-charging
- Inability to log in after device change

**Requested features**

- Ability to increase text size
- Improved syncing across devices
- Easier subscription cancellation


### Lineman's Reference

[App page](https://appshunter.io/ios/app/linemans-reference-xfmr-lab/id1583878194)

**Currently charting:** #14 Top Paid · Education, #137 Top Paid (US App Store)

This interactive simulator allows users to study and learn transformer connections. Test your wiring with various meters, and experience consequences of improper connections. Includes reference diagrams, informational material, and a quiz mode to test knowledge.

**Highlights:** Transformer connection simulation, Volt, ohm, and rotation meters, Abnormal voltage and fuse explosion simulation, Transformer nameplate and coil inspection, Quick reference diagrams, Informational reading material, Quiz and advanced quiz modes

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

**In-app purchases:** none

**What reviewers like**

- 👍 Great for learning
- 👍 Helpful for apprentices
- 👍 Useful practice tool
- 👍 Good concept
- 👍 Excellent labs and sandbox

**What reviewers complain about**

- 🐛 Too many bugs
- 🐛 App is clunky
- 🐛 Wiring issues
- 🐛 Incorrect diagrams
- 🐛 Incorrect quiz answers

**Reported bugs**

- Tutorial loop
- Lines not connecting
- Cannot wire up all banks
- WYE Delta is wrong
- Cannot bus secondary x2 to x2 bushing for delta secondaries

**Requested features**

- Ability to build own banks
- Add tap changer settings
- Add vector charts
- Add more labs with different scenarios
- Create your own bank option


## Frequently asked questions

### Is CDL Prep Practice Test Genie free?

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

### Is Lineman's Reference free?

Lineman's Reference costs $19.99, with no in-app purchases.

### Which has better reviews, CDL Prep Practice Test Genie or Lineman's Reference?

CDL Prep Practice Test Genie is rated higher. CDL Prep Practice Test Genie averages 4.8 out of 5 from 14K ratings, while Lineman's Reference averages 4.6 from 307 ratings.

### Do CDL Prep Practice Test Genie or Lineman's Reference have ads?

Neither CDL Prep Practice Test Genie nor Lineman's Reference shows ads.

### Which is updated more often, CDL Prep Practice Test Genie or Lineman's Reference?

CDL Prep Practice Test Genie ships an update monthly, and Lineman's Reference every 4 weeks. Most recently, CDL Prep Practice Test Genie was updated on October 23, 2026 and Lineman's Reference on October 21, 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.*