# CMC Field Guide vs CODES

The clearest difference is rating: CODES at 5.0 against CMC Field Guide's 4.0. CMC Field Guide's advantage is update cadence (every 3 months vs every 15 months) and ratings volume (24 vs 7). 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.

CODES holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 24 and 7 respectively.

CMC Field Guide ships an update every 3 months, CODES every 15 months. The most recent releases landed on October 23, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | CMC Field Guide | CODES |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (24 ratings)](https://appshunter.io/ios/app/cmc-field-guide/id426955029/reviews) | **[5.0 (7 ratings)](https://appshunter.io/ios/app/codes-nj-dfs/id6457414055/reviews)** |
| Number of ratings | **24** | 7 |
| Positive reviews | 77.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 15 months |
| Monetization | Free | Free |
| Size | 36 MB | 101 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [CMC Rescue, Inc.](https://appshunter.io/developer/426955032) | [Christopher Konash](https://appshunter.io/developer/1700927216) |

## 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


### CODES

[App page](https://appshunter.io/ios/app/codes-nj-dfs/id6457414055)

This app streamlines firefighting operations for New Jersey Fire Departments by enabling Mutual Aid Coordinators to manage resources and responses efficiently. It provides access to county resources and alarm assignments, enhancing situational awareness and decision-making during emergencies.

**Highlights:** Resource management, Response coordination, Mutual aid management, County resource access, Department alarm assignments, Real-time data access

**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 CODES free?

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

### Which has better reviews, CMC Field Guide or CODES?

CODES is rated higher. CMC Field Guide averages 4.0 out of 5 from 24 ratings, while CODES averages 5.0 from 7 ratings.

### Do CMC Field Guide or CODES have ads?

Neither CMC Field Guide nor CODES shows ads.

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

CMC Field Guide ships an update every 3 months, and CODES every 15 months. Most recently, CMC Field Guide was updated on October 23, 2026 and CODES on September 18, 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.*