# CMC Field Guide vs GulfSAR

The clearest difference is rating: GulfSAR at 5.0 against CMC Field Guide's 4.0. 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.

GulfSAR 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.

CMC Field Guide ships an update every 3 months, GulfSAR every 6 weeks. The most recent releases landed on October 23, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | CMC Field Guide | GulfSAR |
| --- | --- | --- |
| 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/gulfsar/id1631693023/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 6 weeks** |
| Monetization | Free | Free |
| Size | 36 MB | 16 MB |
| Requires iOS | **15.1** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CMC Rescue, Inc.](https://appshunter.io/developer/426955032) | [SR2 Solutions, LLC](https://appshunter.io/developer/1389944387) |

## 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


### GulfSAR

[App page](https://appshunter.io/ios/app/gulfsar/id1631693023)

This app provides a critical communication channel during natural disasters when traditional emergency services may be overwhelmed. It sends your emergency details and precise GPS location to responders via internet or text message, increasing the chances of timely assistance.

**Highlights:** Emergency alerts during disasters, GPS location sharing, Internet and SMS communication, Optional personal/medical data inclusion, Secure on-device data storage

**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 GulfSAR free?

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

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

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

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

Neither CMC Field Guide nor GulfSAR shows ads.

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

CMC Field Guide ships an update every 3 months, and GulfSAR every 6 weeks. Most recently, CMC Field Guide was updated on October 23, 2026 and GulfSAR on October 8, 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.*