# CRE Quality Engineer Exam vs Professional Maintenance Prep

CRE Quality Engineer Exam and Professional Maintenance Prep are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. CRE Quality Engineer Exam sells 9 in-app purchases, starting at $8.99 per 7 days and Professional Maintenance Prep sells 9 in-app purchases, starting at $8.99 per 7 days. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | CRE Quality Engineer Exam | Professional Maintenance Prep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.5 (4 ratings)](https://appshunter.io/ios/app/professional-maintenance-prep/id6754882293/reviews)** |
| Number of ratings | — | **4** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 8 months | — |
| Monetization | — | Free with in-app purchases |
| Size | 51 MB | 51 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Exam Prep OU](https://appshunter.io/developer/1689642184) | [YAUHEN BAHDANOVICH](https://appshunter.io/developer/1711932790) |

## What reviewers say

### CRE Quality Engineer Exam

[App page](https://appshunter.io/ios/app/cre-quality-engineer-exam/id6744003203)

**Features:** macOS Compatibility

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CRE Weekly Full Access | $8.99 | per 7 days |
| CRE Monthly Full Access | $24.99 | per month |
| CRE Monthly Full Access | $34.99 | per month |
| CRE Quarterly Full Access | $55.99 | per 3 months |
| CRE Quarterly Full Access | $59.99 | per 3 months |
| CRE Semiannual Full Access | $75.99 | per 6 months |
| CRE Semiannual Full Access | $79.99 | per 6 months |
| CRE Annual Full Access | $109.99 | per year |
| CRE Annual Full Access | $119.99 | per year |


### Professional Maintenance Prep

[App page](https://appshunter.io/ios/app/professional-maintenance-prep/id6754882293)

Prepare for the Certified Maintenance & Reliability Professional exam with expert-crafted questions, realistic simulations, and detailed explanations. Track your progress and customize study plans to master essential knowledge and skills for career advancement.

**Highlights:** Expertly crafted practice questions, Realistic timed exam simulations, Detailed explanations for each question, Customizable study plans, Progress tracking and analytics, Regular content updates, Interactive learning tools

**Features:** macOS Compatibility

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Mainten Weekly Full Access | $8.99 | per 7 days |
| Mainten Monthly Full Access | $24.99 | per month |
| Mainten Monthly Full Access | $24.99 | per month |
| Mainten Quarterly Full Access | $55.99 | per 3 months |
| Mainten Quarterly Full Access | $55.99 | per 3 months |
| Mainten Semiannual Full Access | $75.99 | per 6 months |
| Mainten Semiannual Full Access | $75.99 | per 6 months |
| Mainten Annual Full Access | $109.99 | per year |
| Mainten Annual Full Access | $109.99 | per year |


## Frequently asked questions

### Is CRE Quality Engineer Exam free?

CRE Quality Engineer Exam is free to download, with in-app purchases available.

### Is Professional Maintenance Prep free?

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

### Do CRE Quality Engineer Exam or Professional Maintenance Prep have ads?

Neither CRE Quality Engineer Exam nor Professional Maintenance Prep shows ads.

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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.*