Comparison

Fire Pump Calc vs Lobster Log

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

Head to head
About

Fire Pump Calc

This professional hydraulic calculator assists fire service professionals and students with complex calculations for pump operations. It accurately determines pump discharge pressure, friction loss, elevation changes, and appliance pressure loss, all designed for real-world fireground scenarios. The app works offline and requires no account for immediate use.

Highlights
  • Pump Discharge Pressure (PDP) calculation
  • Friction loss for any hose lay
  • Elevation gain and loss calculation
  • Appliance pressure loss
  • Nozzle pressure calculation
  • Offline functionality
  • No account required
Features
Read full description

Fire Pump Calc is the hydraulic reference tool built for the fireground — fast, accurate, and designed by fire service personnel for fire service personnel. STRUCTURAL OPERATIONS Calculate pump discharge pressure for any structural attack scenario. Select nozzle pressure, hose diameter, hose length, flow rate, elevation, and number of appliances. Instant PDP output using industry-standard friction loss formulas. Metric/imperial toggle built in. WILDLAND PUMP SPECS Full reference specs for five verified wildland pumps — Waterax MARK-3, Wick 80-4H, Honda WH20X, CET PFP-23hp, and CET PFP-11hp. Performance curves, engine specs, fuel type, weight, and max head pressure. All data verified against manufacturer documentation. ADVANCED WILDLAND CALCULATOR Purpose-built for wildland initial attack. Select your pump, hose diameter, hose length, elevation, nozzle type, wyes and fittings, water source, and tank fill percentage. Outputs required PDP, GPM at PDP, max hose lay, max elevation, and estimated runtime — with a live indicator showing whether your required PDP is within pump capacity. CUSTOM PUMP BUILDER Add your own pump specs and save them for future reference. Custom pumps appear in both Wildland screens and persist between sessions. BUILT FOR THE JOB No sign-in required. Works fully offline. No ads, no in-app purchases, no external network calls. A mandatory disclaimer is presented on first launch. Built and maintained by Captain Justin Medeiros, Kitimat Firefighters Association.

About

Lobster Log

Features
Read full description

LobsterLog is the digital logbook designed specifically for commercial lobster fishermen. Replace your paper notebooks with a reliable, offline-first mobile app that works where you work—out on the water. Key Features: Works Offline: Log your daily catch, trap counts, and weather without needing cell service. Data saves to your phone instantly. Track Your Season: Keep a running total of your pounds caught, average price per pound, and days fished. Secure History: Never lose your logbook again. Your data is automatically backed up when you reach the wharf. Simple Interface: Large buttons and high-contrast text designed for use on a rocking boat. Upgrade to LobsterLog Pro Unlock the full power of your data with a Pro subscription: Live Marine Weather: Real-time wind speed, direction, and water temperature for your specific fishing coordinates. Advanced Analytics: Track bait performance and seasonal trends with interactive graphs. Interactive Fishing Map: Plot your strings and view catch heatmaps to plan your next set. Subscription Information: Title: LobsterLog Pro. Length of Subscription: Monthly or Annual. Price: $4.99 per month or $39.99 per year. Payment: Payment will be charged to your iTunes Account at confirmation of purchase. Auto-Renewal: Subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. Management: Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase. Privacy Policy: https://docs.google.com/document/d/1ITlhjE4vfZ5ImQrbHRTzhjGCzZhbRrQ18oqtKgkKNGM/edit?usp=sharing Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Fire Pump Calc4 screens
Lobster Log4 screens

Verdict

The call

The clearest difference is in-app purchases: Fire Pump Calc at none against Lobster Log's 2. On price, update cadence, ads and device support 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. Lobster Log sells 2 in-app purchases, starting at $19.99 per month. Fire Pump Calc asks for nothing beyond the download.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 4 days. The most recent releases landed on October 25, 2026 and October 17, 2026 respectively.

Scorecard1 real difference · 9 level
Fire Pump Calc versus Lobster Log: the parameters behind the verdict, then further details
ParameterFire Pump CalcLobster Log
PriceFreeFree
Rating4.3 (4 ratings) — better—
Positive reviews75.0% of reviews—
Number of ratings4 — better—
Update frequencyEvery 4 daysEvery 4 days
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.615.1 — better
Further details — not scored
Size6 MB118 MB
Age rating4+4+
DeveloperJustin MedeirosJonathon Nickerson

In-app purchases

None

Fire Pump Calc

No in-app purchases

2 purchases

Lobster Log

Subscriptions2
  • LobsterLog$19.991 Month
  • LobsterLog$149.991 Year

Questions

Is Fire Pump Calc free?
Fire Pump Calc is free to download, with no in-app purchases.
Is Lobster Log free?
Lobster Log is free to download, with in-app purchases available.
Do Fire Pump Calc or Lobster Log have ads?
Neither Fire Pump Calc nor Lobster Log shows ads.
Which is updated more often, Fire Pump Calc or Lobster Log?
Fire Pump Calc ships an update every 4 days, and Lobster Log every 4 days. Most recently, Fire Pump Calc was updated on October 25, 2026 and Lobster Log on October 17, 2026.

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