AirmarCAST™ vs MRB Navigator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Bluetooth sensor connection
- Real-time data display
- Intuitive navigation
- Speed, temperature, attitude calibration
- On-board GPS speed comparison
- Advanced speed calibration wizards
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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.
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.
- Live marine conditions
- Marine advisory notifications
- Community reports
- Local webcams
- Location sharing
- Emergency resources
- Boat maintenance tracking
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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
Verdict
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
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.
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.
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.
| Parameter | AirmarCAST™ | MRB Navigator |
|---|---|---|
| Price | Free | Free |
| Rating | 2.6 (5 ratings) | 5.0 (10 ratings) — better |
| Positive reviews | 25.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 5 | 10 — better |
| Update frequency | Every 3 months | Every 5 weeks — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 16 | 16 |
| Further details — not scored | ||
| Size | 112 MB | 32 MB |
| Age rating | 4+ | 4+ |
| Developer | Airmar Technology Inc. | Nick Ironfield |
Customer experience
AirmarCAST™
MRB Navigator
In-app purchases
AirmarCAST™
No in-app purchases
MRB Navigator
- MRB Premium Subscription$8.991 Month
- MRB Premium Subscription$49.991 Year
Questions
Is AirmarCAST™ free?
Is MRB Navigator free?
Which has better reviews, AirmarCAST™ or MRB Navigator?
Do AirmarCAST™ or MRB Navigator have ads?
Which is updated more often, AirmarCAST™ or MRB Navigator?
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