# Mechanical Test Trainer vs Peterson's Test Prep

The clearest difference is price: Peterson's Test Prep at Free against Mechanical Test Trainer's $1.99. Peterson's Test Prep also leads on rating (4.5 vs 3.4) and review sentiment (61% vs 23%). Mechanical Test Trainer's advantage is in-app purchases (none vs 3). On ads, device support and iOS requirement there is nothing between them.

Peterson's Test Prep is free to download; Mechanical Test Trainer costs $1.99 up front. Peterson's Test Prep sells 3 in-app purchases, starting at $58.99 per month. Mechanical Test Trainer asks for nothing beyond the download.

Peterson's Test Prep holds the better App Store score, 4.5 against 3.4. That said, the two scores are not equally well evidenced: Peterson's Test Prep has 330 ratings behind it against 20, so its average is the more settled of the two. Written reviews point the same way: 23% of Mechanical Test Trainer's written reviews are positive against 61% of Peterson's Test Prep's.

Mechanical Test Trainer ships an update every 11 months, Peterson's Test Prep every 2 months. The most recent releases landed on October 13, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Mechanical Test Trainer | Peterson's Test Prep |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | [3.4 (20 ratings)](https://appshunter.io/ios/app/mechanical-test-trainer/id954212609/reviews) | **[4.5 (330 ratings)](https://appshunter.io/ios/app/petersons-test-prep/id1547771930/reviews)** |
| Number of ratings | 20 | **330** |
| Positive reviews | 23.1% of reviews | **61.1% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 2 months** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 136 MB | 29 MB |
| Requires iOS | 15.0 | **14.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Seliant ApS](https://appshunter.io/developer/554676523) | [Peterson's, LLC](https://appshunter.io/developer/1468090485) |

## What reviewers say

### Mechanical Test Trainer

[App page](https://appshunter.io/ios/app/mechanical-test-trainer/id954212609)

Prepare for mechanical aptitude tests with over 300 practice questions. Track your progress with detailed explanations and customized test modes. Improve your understanding of mechanical concepts and tools.

**Highlights:** Over 300 practice questions, Detailed answer explanations, Customizable test modes, Progress tracking and score charts, Mechanical comprehension and knowledge practice, Electrical knowledge and tools sections

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

**In-app purchases:** none


### Peterson's Test Prep

[App page](https://appshunter.io/ios/app/petersons-test-prep/id1547771930)

Prepare for standardized tests to achieve your educational and career goals. Access a vast library of courses and practice materials for college entrance, military, and professional certifications. Syncs seamlessly with a web platform for flexible learning.

**Highlights:** Diagnostic tests, Practice exams, Interactive lessons, Flashcards, Expert strategies, Web-based access, Cross-platform syncing

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 month | $58.99 | per month |
| 3 months | $134.99 | per 3 months |
| 6 months | $234.99 | per 6 months |

**What reviewers like**

- 👍 Great for ACT/SAT prep
- 👍 Excellent ASVAB prep
- 👍 Good for DSST exams
- 👍 Helpful for CLEP exams
- 👍 Useful for HSPT test prep

**What reviewers complain about**

- 😞 Outdated DSST material
- 😞 DSST content not representative
- 😞 Practice exams don't cover instructional material
- 😞 Expensive subscription prices
- 😞 App is slow to load

**Reported bugs**

- Practice tests won't load
- App keeps closing when opening practice exams
- Flashcards and study material are blank
- Videos don't load properly
- App intermittently freezes

**Requested features**

- Ability to revisit test questions and answers for review
- More comprehensive DSST study material
- Update outdated content
- Fix drag-and-drop functionality on mobile
- Improve customer service responsiveness


## Frequently asked questions

### Is Mechanical Test Trainer free?

Mechanical Test Trainer costs $1.99, with no in-app purchases.

### Is Peterson's Test Prep free?

Peterson's Test Prep is free to download, with in-app purchases available.

### Which has better reviews, Mechanical Test Trainer or Peterson's Test Prep?

Peterson's Test Prep is rated higher. Mechanical Test Trainer averages 3.4 out of 5 from 20 ratings, while Peterson's Test Prep averages 4.5 from 330 ratings.

### Do Mechanical Test Trainer or Peterson's Test Prep have ads?

Neither Mechanical Test Trainer nor Peterson's Test Prep shows ads.

### Which is updated more often, Mechanical Test Trainer or Peterson's Test Prep?

Mechanical Test Trainer ships an update every 11 months, and Peterson's Test Prep every 2 months. Most recently, Mechanical Test Trainer was updated on October 13, 2026 and Peterson's Test Prep on October 15, 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.*