# CMC Field Guide vs Bryx Mobile

The clearest difference is rating: Bryx Mobile at 4.4 against CMC Field Guide's 4.0. Bryx Mobile also leads on update cadence (every 3 weeks vs every 3 months) and ratings volume (257 vs 24). CMC Field Guide's advantage is review sentiment (77% vs 61%) and iOS requirement (15.1 vs 18.1). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Bryx Mobile holds the better App Store score, 4.4 against 4.0. That said, the two scores are not equally well evidenced: Bryx Mobile has 257 ratings behind it against 24, so its average is the more settled of the two. Written reviews complicate that: 77% of CMC Field Guide's written reviews are positive against 61% of Bryx Mobile's, so the app with the better star average is not the one people write more warmly about.

CMC Field Guide ships an update every 3 months, Bryx Mobile every 3 weeks. The most recent releases landed on June 10, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | CMC Field Guide | Bryx Mobile |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (24 ratings)](https://appshunter.io/ios/app/cmc-field-guide/id426955029/reviews) | **[4.4 (257 ratings)](https://appshunter.io/ios/app/bryx-mobile/id813078029/reviews)** |
| Number of ratings | 24 | **257** |
| Positive reviews | **77.0% of reviews** | 60.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 36 MB | 41 MB |
| Requires iOS | **15.1** | 18.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 12+ |
| Developer | [CMC Rescue, Inc.](https://appshunter.io/developer/426955032) | [Bryx](https://appshunter.io/developer/813078032) |

## 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


### Bryx Mobile

[App page](https://appshunter.io/ios/app/bryx-mobile/id813078029)

This app enhances communication and situational awareness for first responders. It delivers critical alerts with scene details, routing, and navigation, while also offering features like hydrant information, past call data, and real-time messaging.

**Highlights:** Real-time alerts from CAD, Routing and navigation tools, Hydrant information, Past call data, Site survey data attachment, Live location updates, Internet dispatch radio streams

**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 Bryx Mobile free?

Bryx Mobile is free to download, with no in-app purchases.

### Which has better reviews, CMC Field Guide or Bryx Mobile?

Bryx Mobile is rated higher. CMC Field Guide averages 4.0 out of 5 from 24 ratings, while Bryx Mobile averages 4.4 from 257 ratings.

### Do CMC Field Guide or Bryx Mobile have ads?

Neither CMC Field Guide nor Bryx Mobile shows ads.

### Which is updated more often, CMC Field Guide or Bryx Mobile?

CMC Field Guide ships an update every 3 months, and Bryx Mobile every 3 weeks. Most recently, CMC Field Guide was updated on June 10, 2026 and Bryx Mobile on September 9, 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.*