Comparison

First Mate vs Boat Maintenance Planner

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

Head to head
About

First Mate

Features
Read full description

First Mate is the app every boat owner needs for a reliable and enjoyable boating excursion. First Mate is the first app using advanced Naval Architecture and Marine Engineering calculations and tow tank test data to provide you with vessel duration, range, and engine output without the need for expensive integrated management systems. This app compliments your navigation equipment and gauges to calculate the information needed to plan or update the journey in real time. Input the fuel and vessel speed; First Mate will calculate:  • Hours to empty • Distance to empty • Estimated engine RPM, fuel burn rate, brake horsepower All calculations update when user updates the app. Typically trip planning is done using rough estimates using data from the vessel manufacturer. Integrated management systems can cost hundreds or thousands of dollars, require installation, and only provide basic information about engine performance and maintenance. First Mate is a robust app that accounts for drag, weight, and engine performance to accurately plan excursions and spontaneously change plans while underway. The user interface is designed to allow anyone, regardless of boating knowledge, to easily set up and use the app. Because this app covers all planing monohulls, information about the vessel must be input under the “Vessel” tab. Information about the vessel is available at the manufacturer’s website. It is very simple to use for beginner or advance users. Once the Vessel tab is filled out, print it as a backup and keep a copy in the vessel log book. The “Dashboard” tab provides the user with all the information to estimate range based on the speed, weight, and current fuel readings. Other important information is displayed on this tab includes: engine RPM, fuel burn rate, and brake horsepower (BHP). The environmental input is used to calculate the seastate and the effect it will have on the range. Departure fluid levels and weights are used to estimate the total vessels displacement. There are several reference tables on the “Tables” tab to help estimate the remaining fluid levels based on gauge readings and seastate based on Beaufort Wind Scale. The app can be updated when the engine or propeller is upgraded without the need to buy anything. If you want to know how an engine or propeller upgrade will change the performance of the vessel, the app can do the calculations for you. If you are in the market for a boat, want to build a custom boat, or modify an existing hull, use the app to estimate displacement, range, required fuel capacity, and horsepower. App Features: • User inputs the vessel and engine specifications. • During trip or for trip planning, user only inputs wind speed, fuel, and vessel speed. Update these values throughout the trip to update range and engine calculations. • User can customize or update output after making changes to vessel or propulsion system. • User can update app with new vessel specifications after buying a new boat. Only purchase the app once. • Calculations are only updated with new input from user (saves battery life). • User input is saved on device but make a printout for backup and keep in vessel log. • Take screen shots to share. • Does not have maps or speedometer. Other devices or gauges can provide this information without draining your device’s battery. Find the tutorial and more information here: https://poseidonvesselmanagement.com/first-mate Why is this app not free?? • NO in app purchases, NO subscriptions, NO ads, NO data collection, NO locked features. • Rely on word-of-mouth advertising. • Provide a high-quality product to the customer at the lowest price. Poseidon Vessel Management does NOT collect any of your information, but feel free to tell your friends about our app!

About

Boat Maintenance Planner

Features
Read full description

Boat Maintenance Planner is the ultimate app for boat owners to organize and manage their boats. From tracking parts to scheduling maintenance, this app makes keeping your boat in perfect condition simple and stress-free. Create a detailed profile for your boat, including properties like model, height, width, weight, and engine number. Add parts from our curated selection or upload your own by simply providing a PDF manual. Assign maintenance tasks based on dates, mileage, or engine hours and view them in a calendar-like to-do screen. Check off completed tasks, skip those you don't need, or fully customize your maintenance schedule to suit your needs—even the ones curated by us. Key Features: - Create and customize your boat profile with all relevant details. - Add boat parts from our catalog or upload your own. - Schedule and manage maintenance tasks with full flexibility. - View tasks in an intuitive calendar-like interface. - Easily edit, complete, or skip tasks as needed. Whether you're a casual sailor or a boat enthusiast, Boat Equipment Planner is here to simplify your boat management and keep you prepared for smooth sailing. Download Boat Equipment Planner today and take control of your boat's maintenance like never before!

Screenshots

First Mate4 screens
Boat Maintenance Planner4 screens

Verdict

The call

The clearest difference is price: Boat Maintenance Planner at Free against First Mate's $19.99. First Mate's advantage is iOS requirement (14.5 vs 16.4). On update cadence, ads, in-app purchases 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

Boat Maintenance Planner is free to download; First Mate costs $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 weeks. Both last shipped on October 25, 2026.

Scorecard2 real differences · 4 level
First Mate versus Boat Maintenance Planner: the parameters behind the verdict, then further details
ParameterFirst MateBoat Maintenance Planner
Price$19.99Free — better
Update frequencyEvery 3 weeksEvery 3 weeks
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS14.5 — better16.4
Further details — not scored
Size3 MB74 MB
Age rating4+4+
DeveloperMatthew Ricciardorobert van der plas

In-app purchases

None

First Mate

No in-app purchases

None

Boat Maintenance Planner

No in-app purchases

Questions

Is First Mate free?
First Mate costs $19.99, with no in-app purchases.
Is Boat Maintenance Planner free?
Boat Maintenance Planner is free to download, with no in-app purchases.
Do First Mate or Boat Maintenance Planner have ads?
Neither First Mate nor Boat Maintenance Planner shows ads.
Which is updated more often, First Mate or Boat Maintenance Planner?
First Mate ships an update every 3 weeks, and Boat Maintenance Planner every 3 weeks. Most recently, First Mate was updated on October 25, 2026 and Boat Maintenance Planner on October 25, 2026.

Other comparisons