# CMC Field Guide vs JFRD Hydrants

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

JFRD Hydrants 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, JFRD Hydrants every 3 weeks. The most recent releases landed on October 16, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | CMC Field Guide | JFRD Hydrants |
| --- | --- | --- |
| 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/jfrd-hydrants/id6758307083/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 weeks** |
| Monetization | Free | Free |
| Size | 36 MB | 176 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CMC Rescue, Inc.](https://appshunter.io/developer/426955032) | [City of Jacksonville, FL](https://appshunter.io/developer/526819638) |

## 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


### JFRD Hydrants

[App page](https://appshunter.io/ios/app/jfrd-hydrants/id6758307083)

Access a public map of fire hydrant locations and information. Explore hydrant data, search areas, and enhance emergency preparedness. Authorized municipal users can sign in for additional operational tools.

**Highlights:** Interactive fire hydrant map, Publicly available hydrant data, Searchable map areas, Optional sign-in for municipal users, Emergency preparedness information, Community infrastructure access

**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 JFRD Hydrants free?

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

### Which has better reviews, CMC Field Guide or JFRD Hydrants?

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

### Do CMC Field Guide or JFRD Hydrants have ads?

Neither CMC Field Guide nor JFRD Hydrants shows ads.

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

CMC Field Guide ships an update every 3 months, and JFRD Hydrants every 3 weeks. Most recently, CMC Field Guide was updated on October 16, 2026 and JFRD Hydrants on October 15, 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.*