Comparison

Boating Calcs vs VMH Flex Marine

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

Head to head
About

Boating Calcs

This app offers over 120 boating calculations and unit conversions, along with 120 reference pages. Easily solve a variety of boating-related problems, save and share your calculations, and quickly find the tools you need. It includes extensive reference material across various boating disciplines.

Highlights
  • Over 120 boating calculations
  • Extensive unit conversions
  • 120+ reference pages
  • Save and open calculations
  • Add calculators to favorites
  • Email calculation inputs and results
  • Search functionality
Features
Read full description

You asked for more calculators and we've added them. Boating Calcs has over 120 boating calculations and unit conversions and 120 reference pages. With Boating Calcs you can quickly and easily solve a variety of boating calculations from your iPhone or iPad. Not just calculators, but the ability save and open saved calculations and add calculators to a favorites list. You can also email calculator inputs and results so you can easily share your calculations. Search functionality enables you to quickly find the calculator you want. Chapters: * Area, Angles & Volume * Communications References * Unit Conversions * Finance Calculations * Fuel Calculations * Glossary / Acronyms * Line Calculations and References * Knot References * Mechanical & Electrical Calculations * Performance Calculations * Piloting Calculations * Propeller Reference and Calculations * Weather & Waves Reference and Calculations If there's a calculator or reference material you'd like to see added, visit our website and send us an email.

About

VMH Flex Marine

This compact device displays extensive boat data, customizable across multiple screens. Easily set up alarms and access information via a smartphone app, even with gloves or in wet conditions.

Highlights
  • Compact and powerful display
  • Customizable data screens
  • Laser touch button for navigation
  • Smartphone setup and control
  • Reads from sensors and CAN
  • LIN connectivity for battery data
Read full description

THE VMH FLEX Tiny device / endless possibilities Small but powerful, the VMH Flex is the perfect compromise to display a large amount of boat data in a compact device. No matter if you are wearing gloves or if it is raining on your deck, the innovative laser touch button allows you to scroll up to 5 different screens. Every screen can be freely customized with your most important information, and the setup – including alarms – is easily done with your smartphone just with a »tap«. Capable of reading from both sensors and CAN the VMH Flex is further empowered by the LIN connectivity to get all the information from your battery thanks to the Intelligent Battery Sensor.

Screenshots

Boating Calcs4 screens
VMH Flex Marine4 screens

Verdict

The call

The clearest difference is price: VMH Flex Marine at Free against Boating Calcs's $1.99. VMH Flex Marine also leads on update cadence (every 3 months vs every 7 months). Boating Calcs's advantage is rating (4.8 vs 1.0) and ratings volume (28 vs 1). On ads, in-app purchases, monetization model 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

VMH Flex Marine is free to download; Boating Calcs costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Boating Calcs holds the better App Store score, 4.8 against 1.0. That said, the two scores are not equally well evidenced: Boating Calcs has 28 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Boating Calcs ships an update every 7 months, VMH Flex Marine every 3 months. The most recent releases landed on November 5, 2026 and October 30, 2026 respectively.

Scorecard5 real differences · 5 level
Boating Calcs versus VMH Flex Marine: the parameters behind the verdict, then further details
ParameterBoating CalcsVMH Flex Marine
Price$1.99Free — better
Rating4.8 (28 ratings) — better1.0 (1 ratings)
Positive reviews81.3% of reviews—
Number of ratings28 — better1
Update frequencyEvery 7 monthsEvery 3 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS9.0 — better15.0
Further details — not scored
Size17 MB3 MB
Age rating4+4+
DeveloperCalculated IndustriesVeratron AG

In-app purchases

None

Boating Calcs

No in-app purchases

None

VMH Flex Marine

No in-app purchases

Questions

Is Boating Calcs free?
Boating Calcs costs $1.99, with no in-app purchases.
Is VMH Flex Marine free?
VMH Flex Marine is free to download, with no in-app purchases.
Which has better reviews, Boating Calcs or VMH Flex Marine?
Boating Calcs is rated higher. Boating Calcs averages 4.8 out of 5 from 28 ratings, while VMH Flex Marine averages 1.0 from 1 ratings.
Do Boating Calcs or VMH Flex Marine have ads?
Neither Boating Calcs nor VMH Flex Marine shows ads.
Which is updated more often, Boating Calcs or VMH Flex Marine?
Boating Calcs ships an update every 7 months, and VMH Flex Marine every 3 months. Most recently, Boating Calcs was updated on November 5, 2026 and VMH Flex Marine on October 30, 2026.

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