# CMC Field Guide vs Vision C5

The clearest difference is rating: Vision C5 at 5.0 against CMC Field Guide's 4.0. Vision C5 also leads on iOS requirement (12.0 vs 15.1). CMC Field Guide's advantage is ratings volume (24 vs 1). On price, update cadence, ads and in-app purchases there is nothing between them.

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

Vision C5 holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: CMC Field Guide has 24 ratings behind it against 1, so its average is the more settled of the two.

Both ship on a similar rhythm, roughly every 3 months. The most recent releases landed on October 16, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | CMC Field Guide | Vision C5 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (24 ratings)](https://appshunter.io/ios/app/cmc-field-guide/id426955029/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/vision-c5/id1534252843/reviews)** |
| Number of ratings | **24** | 1 |
| Positive reviews | 77.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | Every 3 months |
| Monetization | Free | Free |
| Size | 36 MB | 40 MB |
| Requires iOS | 15.1 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CMC Rescue, Inc.](https://appshunter.io/developer/426955032) | [3M Company](https://appshunter.io/developer/396772465) |

## 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


### Vision C5

[App page](https://appshunter.io/ios/app/vision-c5/id1534252843)

This app allows users to easily update configuration settings for a specific facepiece device. It is designed to enhance situational intelligence with advanced features for improved visibility and breathing.

**Highlights:** Update configuration settings, Enhance situational intelligence, Improve field of view, Optimize breathing regulator, Integrate headphone technology

**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 Vision C5 free?

Vision C5 is free to download, with no in-app purchases.

### Which has better reviews, CMC Field Guide or Vision C5?

Vision C5 is rated higher. CMC Field Guide averages 4.0 out of 5 from 24 ratings, while Vision C5 averages 5.0 from 1 ratings.

### Do CMC Field Guide or Vision C5 have ads?

Neither CMC Field Guide nor Vision C5 shows ads.

### Which is updated more often, CMC Field Guide or Vision C5?

CMC Field Guide ships an update every 3 months, and Vision C5 every 3 months. Most recently, CMC Field Guide was updated on October 16, 2026 and Vision C5 on October 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.*