Comparison

DO Calcs Buddy vs PumpOperator

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

Head to head
About

DO Calcs Buddy

This app helps firefighters and engineers perform hoseline calculations for training and certification. It offers customizable settings for specific departments and includes interactive study modes for various pump operator topics. The tool is designed for offline use and provides quick reference field topics.

Highlights
  • Hoseline Calculator with custom segments
  • Friction loss, PDP, GPM, Nozzle Reaction
  • Customizable hose and nozzle settings
  • Interactive study mode with randomized questions
  • Offline functionality
  • Quick reference field topics
Features
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DO Calcs Buddy is a customizable Driver/Operator pumping toolkit. Practice hoseline calculations, build hydraulic layouts, review essential concepts, and test your knowledge—all through a clean, visual interface designed for classroom study and non-emergency training. FEATURES: Visual Hydraulic Calculator / Simulator Build custom training layouts using engines, attack engines, hose segments, fog and smoothbore nozzles, wyes, manifolds, siamese connections, standpipes, foam eductors, monitors, hydrants, and master streams. Calculate required pump pressures while accounting for friction loss, appliance loss, elevation, flow, and nozzle pressure. Connect to a hydrant and watch the pressure gauges update in real-time to see how much you can theoretically flow in a situation. Pump Charts Create and organize your own quick-reference pump charts. Import and export individual charts as CSV files, or share complete chart collections using QR codes. Several ready-to-use default charts are also included. Custom Profiles Create apparatus- or department-specific profiles containing your own hoses, nozzles, appliances, coefficients, and preferred values. Save multiple profiles and quickly switch between department, apparatus, or training configurations. Easy QR Code Sharing Share profiles with students, instructors, and colleagues using QR codes. Scan a compatible QR code to import a profile without manually entering every setting. Interactive Study Mode Generate randomized multiple-choice questions using values from your selected profile. Choose one topic or combine multiple categories, including: • Handlines and master streams • Reduced hoselines • Fog and smoothbore nozzle reaction • Smoothbore GPM • Hydrant-flow methods • Relay pumping • Equal and unequal wye layouts • Manifolds and siamese connections • Deck-gun flow calculations Visual diagrams help you interpret each layout, and answer explanations reinforce the formulas and concepts behind the solution. Jump directly to a related reference topic when additional review is needed. Custom Charts Built-In Reference Library Review commonly taught Driver/Operator topics such as friction loss, hose coefficients, elevation pressure, smoothbore flow, nozzle reaction, hydrant flow, relay pumping, LDH, standpipes, siamese appliances, wyes, and manifolds. Offline Ready This app is designed as an offline educational tool. It is completely free, does not collect data, and does not request any permissions other than those necessary for functions like QR scanning. All core app features are completely functional without internet. Designed by a fire service Engineer and Driver/Operator Instructor as a flexible teaching, study, and classroom-training aid.

About

PumpOperator

Features
Currently charting
Read full description

Step behind the pump panel with the most interactive fire apparatus pumping simulator on the App Store. Designed for training engineers and pump operators, this app features a custom-built hydraulics engine that reacts realistically to every command. Experience true-to-life fluid dynamics. Manage intake configurations from onboard water tanks or external hydrants. Command individual discharge gates, charge handlines, and monitor real-time pressure drops and GPM flows as nozzles are opened and closed. Core Simulation Features: Interactive Pump Panel: Master the electronic pressure governor (EPG) and manual throttle controls. Thermal Management: Monitor pump temperature and recirculate water to prevent hazardous overheating (Deadheading). Dynamic Handlines: Visualize dual-attack lines with fluid stream animations that react to pressure changes. Live Gauges: High-resolution Master Intake and Discharge gauges providing real-time feedback on your system state. Water Supply Logic: Switch seamlessly between tank-to-pump and pressurized hydrant intakes.

Screenshots

DO Calcs Buddy4 screens
PumpOperator4 screens

Verdict

The call

The clearest difference is price: DO Calcs Buddy at Free against PumpOperator's $1.99. PumpOperator's advantage is chart position (#169 vs unranked). On ads, in-app purchases, device support and iOS requirement 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

DO Calcs Buddy is free to download; PumpOperator costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Scorecard2 real differences · 9 level
DO Calcs Buddy versus PumpOperator: the parameters behind the verdict, then further details
ParameterDO Calcs BuddyPumpOperator
PriceFree — better$1.99
Rating4.8 (4 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings4 — better—
Update frequencyMonthly—
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
Best chart rank—#169 — better
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.0 — better15.1
Further details — not scored
Size71 MB25 MB
Age rating4+4+
DeveloperMax McCoyDaniel T Stuart

In-app purchases

None

DO Calcs Buddy

No in-app purchases

None

PumpOperator

No in-app purchases

Questions

Is DO Calcs Buddy free?
DO Calcs Buddy is free to download, with no in-app purchases.
Is PumpOperator free?
PumpOperator costs $1.99, with no in-app purchases.
Do DO Calcs Buddy or PumpOperator have ads?
Neither DO Calcs Buddy nor PumpOperator shows ads.

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