# CMC Field Guide vs Education Is KEY

CMC Field Guide and Education Is KEY both sit at 4.0 stars, but that hides the real split: 78% of CMC Field Guide's written reviews are positive against 0% of Education Is KEY's. CMC Field Guide also leads on ratings volume (24 vs 3) and device support (3 vs 1). On price, rating, update cadence and ads there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 4.0 for CMC Field Guide against 4.0 for Education Is KEY. That said, the two scores are not equally well evidenced: CMC Field Guide has 24 ratings behind it against 3, so its average is the more settled of the two. Written reviews are what separate them: 78% of CMC Field Guide's written reviews are positive against 0% of Education Is KEY's.

CMC Field Guide ships an update every 3 months, Education Is KEY every 5 months. The most recent releases landed on October 23, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | CMC Field Guide | Education Is KEY |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (24 ratings)](https://appshunter.io/ios/app/cmc-field-guide/id426955029/reviews)** | [4.0 (3 ratings)](https://appshunter.io/ios/app/education-is-key/id6744249929/reviews) |
| Number of ratings | **24** | 3 |
| Positive reviews | **77.8% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 5 months |
| Monetization | Free | Free |
| Size | 36 MB | 63 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [CMC Rescue, Inc.](https://appshunter.io/developer/426955032) | [KFH Industries, INC](https://appshunter.io/developer/1806664179) |

## What reviewers say

### CMC Field Guide

[App page](https://appshunter.io/ios/app/cmc-field-guide/id426955029)

Access rope rescue and access diagrams, reference charts, and how-to information instantly in the field. This free app provides essential rescue references, allows for note-taking, and supports offline access to downloaded content.

**Highlights:** Rope rescue and access diagrams, Reference charts, How-to information, Bookmark and take notes, Offline access to downloads, Browse equipment and tutorials

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 👍 Great resource for rescue
- 👍 Useful for knots
- 👍 Informative and well-organized
- 👍 Handy reference tool
- 👍 Clear illustrations

**What reviewers complain about**

- 🐛 App crashes frequently
- 🐛 Unable to access content after updates
- 🐛 Glitches and bugs
- 🐛 Poor display quality
- 🐛 Not working on iPad

**Reported bugs**

- App crashes before it opens
- Unable to go beyond the first page
- Unable to access after updating
- App crashed twice
- Some links in the app don't work

**Requested features**

- Enable landscape mode
- Update with latest techniques


### Education Is KEY

[App page](https://appshunter.io/ios/app/education-is-key/id6744249929)

This tool provides firefighters with essential hose data and calculations, including friction loss, GPM, and nozzle pressure. It also serves as a product catalog for hose specifications and helps locate local product experts.

**Highlights:** Friction loss calculator, GPM and nozzle pressure reference, Key Hose product catalog, Local product expert finder, Fire service interface

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CMC Field Guide free?

CMC Field Guide is free to download, with no in-app purchases.

### Is Education Is KEY free?

Education Is KEY is free to download, with no in-app purchases.

### Which has better reviews, CMC Field Guide or Education Is KEY?

CMC Field Guide is rated higher. CMC Field Guide averages 4.0 out of 5 from 24 ratings, while Education Is KEY averages 4.0 from 3 ratings.

### Do CMC Field Guide or Education Is KEY have ads?

Neither CMC Field Guide nor Education Is KEY shows ads.

### Which is updated more often, CMC Field Guide or Education Is KEY?

CMC Field Guide ships an update every 3 months, and Education Is KEY every 5 months. Most recently, CMC Field Guide was updated on October 23, 2026 and Education Is KEY on October 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.*