# CMC Field Guide vs ShiftCal® for CalFire

The clearest difference is review sentiment: CMC Field Guide at 78% against ShiftCal® for CalFire's 0%. CMC Field Guide also leads on price (Free vs $3.99) and rating (4.0 vs 1.0). ShiftCal® for CalFire's advantage is iOS requirement (11.0 vs 15.1). On ads, in-app purchases and device support there is nothing between them.

CMC Field Guide is free to download; ShiftCal® for CalFire costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

CMC Field Guide holds the better App Store score, 4.0 against 1.0. 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. Written reviews point the same way: 78% of CMC Field Guide's written reviews are positive against 0% of ShiftCal® for CalFire's.

CMC Field Guide ships an update every 3 months, ShiftCal® for CalFire every 14 months. The most recent releases landed on October 23, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | CMC Field Guide | ShiftCal® for CalFire |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | **[4.0 (24 ratings)](https://appshunter.io/ios/app/cmc-field-guide/id426955029/reviews)** | [1.0 (1 ratings)](https://appshunter.io/ios/app/shiftcal-for-calfire/id837168207/reviews) |
| Number of ratings | **24** | 1 |
| Positive reviews | **77.8% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 14 months |
| Monetization | **Free** | Paid |
| Size | 36 MB | 23 MB |
| Requires iOS | 15.1 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [CMC Rescue, Inc.](https://appshunter.io/developer/426955032) | [Thomas Wesley Erickson](https://appshunter.io/developer/710639944) |

## 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


### ShiftCal® for CalFire

[App page](https://appshunter.io/ios/app/shiftcal-for-calfire/id837168207)

This shift calendar displays the "bump" schedule used by CalFire in Riverside County, California, and by individual agencies. It is specifically designed for shift work and not for general appointments.

**Highlights:** CalFire "bump" schedule display, Agency-specific schedule support, Shift work focus, Designed for Riverside County, CA

**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 ShiftCal® for CalFire free?

ShiftCal® for CalFire costs $3.99, with no in-app purchases.

### Which has better reviews, CMC Field Guide or ShiftCal® for CalFire?

CMC Field Guide is rated higher. CMC Field Guide averages 4.0 out of 5 from 24 ratings, while ShiftCal® for CalFire averages 1.0 from 1 ratings.

### Do CMC Field Guide or ShiftCal® for CalFire have ads?

Neither CMC Field Guide nor ShiftCal® for CalFire shows ads.

### Which is updated more often, CMC Field Guide or ShiftCal® for CalFire?

CMC Field Guide ships an update every 3 months, and ShiftCal® for CalFire every 14 months. Most recently, CMC Field Guide was updated on October 23, 2026 and ShiftCal® for CalFire on October 16, 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.*