# CMC Field Guide vs ResponderOne

The clearest difference is rating: ResponderOne at 5.0 against CMC Field Guide's 4.0. ResponderOne also leads on update cadence (weekly vs every 3 months). CMC Field Guide's advantage is ratings volume (24 vs 6). 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.

ResponderOne holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 24 and 6 respectively.

CMC Field Guide ships an update every 3 months, ResponderOne weekly. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | CMC Field Guide | ResponderOne |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (24 ratings)](https://appshunter.io/ios/app/cmc-field-guide/id426955029/reviews) | **[5.0 (6 ratings)](https://appshunter.io/ios/app/responderone/id6752734383/reviews)** |
| Number of ratings | **24** | 6 |
| Positive reviews | 77.8% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Weekly** |
| Monetization | Free | Free |
| Size | 36 MB | 59 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [CMC Rescue, Inc.](https://appshunter.io/developer/426955032) | [ResponderOne](https://appshunter.io/developer/1840739133) |

## 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


### ResponderOne

[App page](https://appshunter.io/ios/app/responderone/id6752734383)

Provides emergency service professionals with instant, offline access to department protocols, guidelines, and critical resources. Features smart organization, powerful search, and automatic updates to ensure users always have the latest information.

**Highlights:** Offline access to resources, Smart hierarchical organization, Powerful instant search, Quick bookmarking, Automatic protocol updates, Multi-format resource support, Dark mode interface

**Features:** macOS Compatibility, Vision Pro support

**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 ResponderOne free?

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

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

ResponderOne is rated higher. CMC Field Guide averages 4.0 out of 5 from 24 ratings, while ResponderOne averages 5.0 from 6 ratings.

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

Neither CMC Field Guide nor ResponderOne shows ads.

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

CMC Field Guide ships an update every 3 months, and ResponderOne weekly. Most recently, CMC Field Guide was updated on October 23, 2026 and ResponderOne on October 24, 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.*