# Manufacturing Engineer Prep vs FiveMinuteFox

The clearest difference is update cadence: FiveMinuteFox at every 3 months against Manufacturing Engineer Prep's every 7 months. Manufacturing Engineer Prep's advantage is iOS requirement (15.1 vs 17.6). 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 FiveMinuteFox sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Manufacturing Engineer Prep ships an update every 7 months, FiveMinuteFox every 3 months. The most recent releases landed on September 14, 2026 and August 14, 2026 respectively.

## The numbers

| Metric | Manufacturing Engineer Prep | FiveMinuteFox |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (3 ratings)](https://appshunter.io/ios/app/fiveminutefox-mental-math/id6758168199/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 3 months** |
| Monetization | — | Freemium |
| Size | 51 MB | 4 MB |
| Requires iOS | **15.1** | 17.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Exam Prep OU](https://appshunter.io/developer/1689642184) | [KeepAddIt Works, LLC](https://appshunter.io/developer/1847586744) |

## 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 |


### FiveMinuteFox

[App page](https://appshunter.io/ios/app/fiveminutefox-mental-math/id6758168199)

Enhance your financial acumen with daily mental math exercises. Designed by a finance professional, this app offers progressive levels of practice to improve your calculation speed and accuracy for business contexts. Unlock advanced levels and features with a premium subscription.

**Highlights:** Daily mental math practice, 30 progressive difficulty levels, Specialized business context problems, Detailed solution explanations, Practice Mode for targeted skills, Streak tracking

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FiveMinuteFox Premium | $4.99 | per month |
| FiveMinuteFox Premium | $29.99 | per year |


## Frequently asked questions

### Is Manufacturing Engineer Prep free?

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

### Is FiveMinuteFox free?

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

### Do Manufacturing Engineer Prep or FiveMinuteFox have ads?

Neither Manufacturing Engineer Prep nor FiveMinuteFox shows ads.

### Which is updated more often, Manufacturing Engineer Prep or FiveMinuteFox?

Manufacturing Engineer Prep ships an update every 7 months, and FiveMinuteFox every 3 months. Most recently, Manufacturing Engineer Prep was updated on September 14, 2026 and FiveMinuteFox on August 14, 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.*