# easyTRX3 vs AirmarCAST™

The clearest difference is update cadence: AirmarCAST™ at every 3 months against easyTRX3's every 16 months. easyTRX3's advantage is iOS requirement (11.0 vs 16). On price, ads, in-app purchases and device support there is nothing between them.

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

easyTRX3 ships an update every 16 months, AirmarCAST™ every 3 months. The most recent releases landed on October 26, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | easyTRX3 | AirmarCAST™ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[2.6 (5 ratings)](https://appshunter.io/ios/app/airmarcast/id1492428585/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | — | 25.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 16 months | **Every 3 months** |
| Monetization | — | Free |
| Size | 52 MB | 112 MB |
| Requires iOS | **11.0** | 16 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Weatherdock AG](https://appshunter.io/developer/554111402) | [Airmar Technology Inc.](https://appshunter.io/developer/1062316789) |

## What reviewers say

### easyTRX3

[App page](https://appshunter.io/ios/app/easytrx3-manager/id1450755474)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is easyTRX3 free?

easyTRX3 is free to download, with no in-app purchases.

### Is AirmarCAST™ free?

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

### Do easyTRX3 or AirmarCAST™ have ads?

Neither easyTRX3 nor AirmarCAST™ shows ads.

### Which is updated more often, easyTRX3 or AirmarCAST™?

easyTRX3 ships an update every 16 months, and AirmarCAST™ every 3 months. Most recently, easyTRX3 was updated on October 26, 2026 and AirmarCAST™ on November 3, 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.*