Comparison

AirmarCAST™ vs MRB Navigator

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

Head to head
About

AirmarCAST™

Configure and calibrate your boat's Bluetooth-enabled multisensors and modules directly from your mobile device. View real-time data on detailed gauges and perform advanced calibrations for speed, temperature, and attitude without extra hardware.

Highlights
  • Bluetooth sensor connection
  • Real-time data display
  • Intuitive navigation
  • Speed, temperature, attitude calibration
  • On-board GPS speed comparison
  • Advanced speed calibration wizards
Features
Read full description

Airmar® CAST™ connects to the Bluetooth®-enabled DST810, DX900+, WX300 multisensors and SmartBoat® modules on your boat, making sensor configuration and calibration easy with intuitive app navigation and real-time data from your multisensor. View data on detailed gauges and digital data screens, and perform speed, temperature, and attitude calibrations without the need for additional converters or cables. With CAST, you can configure your multisensor directly, regardless of the other displays and gauges on board. All data configurations and calibrations are stored in the multisensor and delivered on the NMEA2000® network. When used with DST810, you can calibrate basic or heel-compensated speed through water using your on-board GPS speed for comparison. Intuitive wizards guide you through multiple runs to correct for current. Or take it a step further to advanced speed calibration, with up to five heel angles and ten reference speeds. Until now, advanced speed calibration was only possible through expensive PC based software. With Airmar’s SmartBoat® modules, the CAST app delivers the fastest connection to the SmartView software for system configuration.

About

MRB Navigator

This app provides real-time marine conditions, tides, wind, and weather forecasts for boaters on the North Shore & Seacoast. It offers community reports, webcam access, location sharing, and safety resources. Manage your boat's maintenance and discover local events and resources.

Highlights
  • Live marine conditions
  • Marine advisory notifications
  • Community reports
  • Local webcams
  • Location sharing
  • Emergency resources
  • Boat maintenance tracking
Read full description

MRB Nav is your essential companion for boating on the North Shore & Seacoast, built by locals for locals. Stay informed with real-time marine conditions, tides, wind, and weather forecasts specific to your location. The app covers the North Shore and Seacoast of Massachusetts & New Hampshire. Key Features: - Live Marine Conditions: Get up-to-the-minute updates on water conditions, tides, wind, and weather - Get Marine Advisory push notifications - See community reports of conditions and sightings on the water - Access local webcams seamlessly - Location Sharing: Connect with friends on the water and share your location for safer, more social boating - Safety First: Access emergency resources, float plans, and marine advisories - Boat Management: Track maintenance, create checklists, and store important documents - Marine Forecasts: Plan your day with accurate marine forecasts and tide predictions - Local Knowledge: Access information about marine resources, boat ramps, and fuel stations - Local events listed to see what's going on across the North Shore and Seacoast. Perfect for recreational boaters, anglers, and anyone enjoying boating on the North Shore & Seacoast. Whether you're planning a day of fishing, cruising with friends, or checking conditions before launching, MRB Nav has you covered. Download MRB Nav today and join your local boating community!

Screenshots

AirmarCAST™4 screens
MRB Navigator4 screens

Verdict

The call

The clearest difference is review sentiment: MRB Navigator at 100% against AirmarCAST™'s 25%. MRB Navigator also leads on rating (5.0 vs 2.6) and update cadence (every 5 weeks vs every 3 months). AirmarCAST™'s advantage is in-app purchases (none vs 2). On price, ratings volume, 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. MRB Navigator sells 2 in-app purchases, starting at $8.99 per month. AirmarCAST™ asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

MRB Navigator holds the better App Store score, 5.0 against 2.6. Both are backed by a comparable volume of ratings — 5 and 10 respectively. Written reviews point the same way: 25% of AirmarCAST™'s written reviews are positive against 100% of MRB Navigator's.

UpkeepUpdate frequency

AirmarCAST™ ships an update every 3 months, MRB Navigator every 5 weeks. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

Scorecard5 real differences · 5 level
AirmarCAST™ versus MRB Navigator: the parameters behind the verdict, then further details
ParameterAirmarCAST™MRB Navigator
PriceFreeFree
Rating2.6 (5 ratings)5.0 (10 ratings) — better
Positive reviews25.0% of reviews100.0% of reviews — better
Number of ratings510 — better
Update frequencyEvery 3 monthsEvery 5 weeks — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFreemium
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS1616
Further details — not scored
Size112 MB32 MB
Age rating4+4+
DeveloperAirmar Technology Inc.Nick Ironfield

Customer experience

AirmarCAST™

All ratings5 ratings
Positive40.0%
Neutral0.0%
Negative60.0%
Written reviews4 reviews
Positive25.0%
Neutral0.0%
Negative75.0%

MRB Navigator

All ratings10 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews6 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

AirmarCAST™

No in-app purchases

2 purchases

MRB Navigator

Subscriptions2
  • MRB Premium Subscription$8.991 Month
  • MRB Premium Subscription$49.991 Year

Questions

Is AirmarCAST™ free?
AirmarCAST™ is free to download, with no in-app purchases.
Is MRB Navigator free?
MRB Navigator is free to download, with in-app purchases available.
Which has better reviews, AirmarCAST™ or MRB Navigator?
MRB Navigator is rated higher. AirmarCAST™ averages 2.6 out of 5 from 5 ratings, while MRB Navigator averages 5.0 from 10 ratings.
Do AirmarCAST™ or MRB Navigator have ads?
Neither AirmarCAST™ nor MRB Navigator shows ads.
Which is updated more often, AirmarCAST™ or MRB Navigator?
AirmarCAST™ ships an update every 3 months, and MRB Navigator every 5 weeks. Most recently, AirmarCAST™ was updated on November 3, 2026 and MRB Navigator on October 30, 2026.

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