easyTRX3 vs AirmarCAST™
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
easyTRX3
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Use this app for setup your easyTRX3 (newest generation of AIS Class B Transponder). You can enter all basic data and you can program advanced settings. A diagnostic view gives all information about the "health" of the unit. Received AIS ships will be shown in a ship list and additionally plotted on a map view on your iPhone or iPad.
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.
Screenshots
Verdict
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.
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. 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.
| Parameter | easyTRX3 | AirmarCAST™ |
|---|---|---|
| Price | Free | Free |
| Rating | — | 2.6 (5 ratings) — better |
| Positive reviews | — | 25.0% of reviews |
| Number of ratings | — | 5 — better |
| Update frequency | Every 16 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 16 |
| Further details — not scored | ||
| Size | 52 MB | 112 MB |
| Age rating | 4+ | 4+ |
| Developer | Weatherdock AG | Airmar Technology Inc. |
In-app purchases
easyTRX3
No in-app purchases
AirmarCAST™
No in-app purchases









