Comparison

CMC Field Guide vs PumpOps

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Rope rescue and access diagrams
  • Reference charts
  • How-to information
  • Bookmark and take notes
  • Offline access to downloads
  • Browse equipment and tutorials
Features
Read 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.

About

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.

Highlights
  • 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
Features
Read 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

CMC Field Guide3 screens
PumpOps4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard3 real differences · 7 level
CMC Field Guide versus PumpOps: the parameters behind the verdict, then further details
ParameterCMC Field GuidePumpOps
PriceFreeFree
Rating4.0 (24 ratings)5.0 (1 ratings) — better
Positive reviews77.0% of reviews—
Number of ratings24 — better1
Update frequencyEvery 3 monthsEvery 10 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Apple Watch — better
Requires iOS15.115.0 — better
Further details — not scored
Size36 MB9 MB
Age rating4+4+
DeveloperCMC Rescue, Inc.TREVOR GREENWOOD WILLIAMS

Customer experience

CMC Field Guide

All ratings24 ratings
Positive66.7%
Neutral20.8%
Negative12.5%
Written reviews61 reviews
Positive77.0%
Neutral3.3%
Negative19.7%

PumpOps

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

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 more
  • 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

None

CMC Field Guide

No in-app purchases

None

PumpOps

No in-app purchases

Questions

Is CMC Field Guide free?
CMC Field Guide is free to download, with no in-app purchases.
Is PumpOps free?
PumpOps is free to download, with no in-app purchases.
Which has better reviews, CMC Field Guide or PumpOps?
PumpOps is rated higher. CMC Field Guide averages 4.0 out of 5 from 24 ratings, while PumpOps averages 5.0 from 1 ratings.
Do CMC Field Guide or PumpOps have ads?
Neither CMC Field Guide nor PumpOps shows ads.
Which is updated more often, CMC Field Guide or PumpOps?
CMC Field Guide ships an update every 3 months, and PumpOps every 10 days. Most recently, CMC Field Guide was updated on October 6, 2026 and PumpOps on September 23, 2026.

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