# AirmarCAST™ vs MRB Navigator

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.

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.

## The numbers

| Metric | AirmarCAST™ | MRB Navigator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.6 (5 ratings)](https://appshunter.io/ios/app/airmarcast/id1492428585/reviews) | **[5.0 (10 ratings)](https://appshunter.io/ios/app/mrb-navigator/id6742063073/reviews)** |
| Number of ratings | 5 | **10** |
| Positive reviews | 25.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 5 weeks** |
| Monetization | **Free** | Freemium |
| Size | 112 MB | 32 MB |
| Requires iOS | 16 | 16 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Airmar Technology Inc.](https://appshunter.io/developer/1062316789) | [Nick Ironfield](https://appshunter.io/developer/1796632833) |

## What reviewers say

### AirmarCAST™

[App page](https://appshunter.io/ios/app/airmarcast/id1492428585)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### MRB Navigator

[App page](https://appshunter.io/ios/app/mrb-navigator/id6742063073)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MRB Premium Subscription | $8.99 | per month |
| MRB Premium Subscription | $49.99 | per year |


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*