# AirmarCAST™ vs BilgeBuddy

The clearest difference is review sentiment: BilgeBuddy at 100% against AirmarCAST™'s 25%. BilgeBuddy also leads on rating (4.9 vs 2.6) and ratings volume (15 vs 5). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

BilgeBuddy holds the better App Store score, 4.9 against 2.6. Both are backed by a comparable volume of ratings — 5 and 15 respectively. Written reviews point the same way: 25% of AirmarCAST™'s written reviews are positive against 100% of BilgeBuddy's.

AirmarCAST™ ships an update every 3 months, BilgeBuddy every 6 weeks. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | AirmarCAST™ | BilgeBuddy |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.6 (5 ratings)](https://appshunter.io/ios/app/airmarcast/id1492428585/reviews) | **[4.9 (15 ratings)](https://appshunter.io/ios/app/bilgebuddy/id6468819407/reviews)** |
| Number of ratings | 5 | **15** |
| Positive reviews | 25.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 6 weeks** |
| Monetization | Free | Free |
| Size | 112 MB | 36 MB |
| Requires iOS | 16 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Airmar Technology Inc.](https://appshunter.io/developer/1062316789) | [BilgeBuddy](https://appshunter.io/developer/1710603189) |

## 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


### BilgeBuddy

[App page](https://appshunter.io/ios/app/bilgebuddy/id6468819407)

This app allows you to remotely monitor your boat's bilge system, battery health, and location. Receive instant notifications for potential issues like flooding, system malfunctions, or unexpected movement, ensuring peace of mind and proactive problem-solving.

**Highlights:** Remote bilge system monitoring, Flooding detection and sinking prevention, Battery system health monitoring, Break-away alerts and location services, Impact detection, Easy installation with common pumps

**In-app purchases:** none


## Frequently asked questions

### Is AirmarCAST™ free?

AirmarCAST™ is free to download, with no in-app purchases.

### Is BilgeBuddy free?

BilgeBuddy is free to download, with no in-app purchases.

### Which has better reviews, AirmarCAST™ or BilgeBuddy?

BilgeBuddy is rated higher. AirmarCAST™ averages 2.6 out of 5 from 5 ratings, while BilgeBuddy averages 4.9 from 15 ratings.

### Do AirmarCAST™ or BilgeBuddy have ads?

Neither AirmarCAST™ nor BilgeBuddy shows ads.

### Which is updated more often, AirmarCAST™ or BilgeBuddy?

AirmarCAST™ ships an update every 3 months, and BilgeBuddy every 6 weeks. Most recently, AirmarCAST™ was updated on November 3, 2026 and BilgeBuddy 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.*