# Manufacturing Engineer Prep vs CMRP Study Guide

The clearest difference is update cadence: CMRP Study Guide at every 3 weeks against Manufacturing Engineer Prep's every 7 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Manufacturing Engineer Prep sells 9 in-app purchases, starting at $8.99 per 7 days and CMRP Study Guide sells 1 in-app purchase, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Manufacturing Engineer Prep ships an update every 7 months, CMRP Study Guide every 3 weeks. The most recent releases landed on September 14, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Manufacturing Engineer Prep | CMRP Study Guide |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 3 weeks** |
| Size | 51 MB | 18 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Exam Prep OU](https://appshunter.io/developer/1689642184) | [David Peterson](https://appshunter.io/developer/1808322033) |

## What reviewers say

### Manufacturing Engineer Prep

[App page](https://appshunter.io/ios/app/manufacturing-engineer-prep/id6744238978)

**Features:** macOS Compatibility

**In-app purchases (9)**

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


### CMRP Study Guide

[App page](https://appshunter.io/ios/app/cmrp-study-guide-maintenance/id6775045271)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro membership | $2.99 | per month |


## Frequently asked questions

### Is Manufacturing Engineer Prep free?

Manufacturing Engineer Prep is free to download, with in-app purchases available.

### Is CMRP Study Guide free?

CMRP Study Guide is free to download, with in-app purchases available.

### Do Manufacturing Engineer Prep or CMRP Study Guide have ads?

Neither Manufacturing Engineer Prep nor CMRP Study Guide shows ads.

### Which is updated more often, Manufacturing Engineer Prep or CMRP Study Guide?

Manufacturing Engineer Prep ships an update every 7 months, and CMRP Study Guide every 3 weeks. Most recently, Manufacturing Engineer Prep was updated on September 14, 2026 and CMRP Study Guide on September 10, 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.*