CMC Field Guide vs PumpOps
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CMC Field Guide
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.
- Rope rescue and access diagrams
- Reference charts
- How-to information
- Bookmark and take notes
- Offline access to downloads
- Browse equipment and tutorials
Read full descriptionHide full description
This free App allows quick access to rope rescue and access diagrams, reference charts, how-to information, and rescue references, all from the palm of your hand while out in the field. It's packed with reference charts, diagrams, and how-to information. With the CMC Field Guide App you can: Access rescue references instantly Bookmark and take notes on your favorite sections Download videos, guides, and manuals for offline use Browse equipment and information, tutorials, and product user manuals **Note** Updating this App will give you access to all of the functionality built into the most recent version of the App. Your saved information including Notes, References, and Attachments, will be carried through into the updated version.
PumpOps
This app quickly calculates engine pressure for fire apparatus engineers and operator candidates. It allows users to select nozzles, hoses, and layouts to instantly update pump discharge pressure, with a clear breakdown of the equation used. It also includes reference and training tools for various fireground hydraulics.
- Instant PSI calculation
- Live equation breakdown
- Friction loss per 100'
- Supports various nozzles and hose lays
- Appliance and elevation calculations
- Interactive formula calculators
- Customizable themes and presets
Read full descriptionHide full description
Pump calculations in seconds. PumpOps is a fast, dead-simple engine pressure calculator built for fire apparatus engineers and operator candidates. Pick your nozzle, hose, and layout - the pump discharge pressure updates instantly, with the full equation shown so you always know where the number came from. BUILT FOR SPEED - One screen. Instant PSI. - Live equation breakdown: NP + FL + Appliances + Elevation - Friction loss shown per 100' for every hose selection COVERS THE FULL LAYOUT - Fog and smooth bore handline nozzles - Master streams, monitors, deck guns, and ladderpipes - Up to three hose lays, including two- and three-line big water - Appliances: wye, siamese, monitor, ladderpipe, standpipe - Elevation by floor or by feet, above and below grade - Helicopter fill lays included REFERENCE AND TRAINING TOOLS - Interactive formula calculators: friction loss, nozzle discharge, standpipe ops, relay pumping, and more - Hose coefficient calculator with a live flow scale - Nozzle GPM and pressure quick-reference tables - Over-pressure warning when a layout exceeds safe pumping limits MAKE IT YOURS - Save and name your favorite hose lays - Drag to reorder presets so your most-used lays are on top - Color, dark, and light themes with adjustable display size TRAIN WITH CONFIDENCE Every calculation follows standard fireground hydraulics used in apparatus operator training, verified against department-style pump charts. DISCLAIMER: PumpOps is for training purposes only. It is not a substitute for department policy, certified training, or fireground judgment. Always verify pressures against your department's current procedures.
Screenshots
Verdict
The clearest difference is rating: PumpOps at 5.0 against CMC Field Guide's 4.0. PumpOps also leads on update cadence (every 10 days 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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
PumpOps 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, PumpOps every 10 days. The most recent releases landed on October 6, 2026 and September 23, 2026 respectively.
| Parameter | CMC Field Guide | PumpOps |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (24 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 77.0% of reviews | — |
| Number of ratings | 24 — better | 1 |
| Update frequency | Every 3 months | Every 10 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod, Apple Watch — better |
| Requires iOS | 15.1 | 15.0 — better |
| Further details — not scored | ||
| Size | 36 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | CMC Rescue, Inc. | TREVOR GREENWOOD WILLIAMS |
Customer experience
CMC Field Guide
PumpOps
Bugs and requests
CMC Field Guide
Reported bugs
15 issues- 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
Show 10 moreShow fewer
- Multiple glitches where pages cannot be opened
- Cannot open the app after update
- New upgrade crashes on opening items
- Could not find page all the time
- App doesn't open
- Half the tabs disappear
- Barely works (can rarely get into any of the pages)
- Add-on pop up when viewing PDF
- Poor display quality - not useful for reading
- Only M/A illustration shown is 1:1 after update
Requested features
2 requests- Enable landscape mode
- Update with latest techniques
PumpOps
Not enough reviews yet to summarise bugs or requests.
In-app purchases
CMC Field Guide
No in-app purchases
PumpOps
No in-app purchases
Questions
Is CMC Field Guide free?
Is PumpOps free?
Which has better reviews, CMC Field Guide or PumpOps?
Do CMC Field Guide or PumpOps have ads?
Which is updated more often, CMC Field Guide or PumpOps?
Other comparisons















