AirmarCAST™ vs Epoch Pro
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.
Epoch Pro
Monitor and manage your Epoch Pro batteries with this app. It provides real-time data on individual batteries and systems, offers Bluetooth connectivity for enhanced user experience, and helps extend battery life and stability.
- Real-time SOC, voltage, current, capacity, temperature monitoring
- Individual battery voltage and alarm status display
- Cell temperature and parameter warnings (over/under voltage, over current)
- Bluetooth connectivity for battery systems
- Record of warnings and protection events
- Extend battery service life and enhance stability
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The Epoch Pro APP is specifically designed for Epoch Pro batteries and supports information monitoring of individual batteries, as well as battery systems in air connection or wired connection, etc. You can also easily realize the Bluetooth function of the GC2 batteris by connecting the Bluetooth module for more comfortable and convenient user experience. Make sure you have the latest app version. Turn on your Bluetooth. Tap the icon to open the App. It will search for all Epoch Pro batteries within the range of your Bluetooth device and provide a list. If all the batteries are not listed, move closer to the battery location and refresh the screen. Choose the battery you want to look at. The Epoch intelligent battery management system and the active equalizer are connected via Bluetooth to monitor the battery status, collect, store and process information during battery operation in real time, exchange information with external devices, and solve the safety, usability and usage of the lithium battery system. The key issue of life is to extend the service life of the battery to a certain extent, and to enhance the stability of the battery pack to a certain extent. 1. Display real-time SOC, voltage, current, capacity, temperature, and other parameter values, and display them in the form of instrument panels and numbers; 2. Display the real-time voltage and alarm status of all single batteries. If the reported parameters trigger the alarm value or protection value, an alarm will be prompted; 3. Cell temperature warning. Real-time alarm for over temperature, over current, over voltage, under voltage. 4. Record the warnings/protection that occur at each moment. Best Regards!
Screenshots
Verdict
The clearest difference is rating: Epoch Pro at 4.0 against AirmarCAST™'s 2.6. Epoch Pro also leads on review sentiment (59% vs 25%) and ratings volume (25 vs 5). AirmarCAST™'s advantage is update cadence (every 3 months vs every 13 months). On price, ads, in-app purchases and monetization model 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.
Epoch Pro holds the better App Store score, 4.0 against 2.6. That said, the two scores are not equally well evidenced: Epoch Pro has 25 ratings behind it against 5, so its average is the more settled of the two. Written reviews point the same way: 25% of AirmarCAST™'s written reviews are positive against 59% of Epoch Pro's.
AirmarCAST™ ships an update every 3 months, Epoch Pro every 13 months. The most recent releases landed on September 8, 2026 and June 2, 2026 respectively.
| Parameter | AirmarCAST™ | Epoch Pro |
|---|---|---|
| Price | Free | Free |
| Rating | 2.6 (5 ratings) | 4.0 (25 ratings) — better |
| Positive reviews | 25.0% of reviews | 58.8% of reviews — better |
| Number of ratings | 5 | 25 — better |
| Update frequency | Every 3 months — better | Every 13 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 16 | 13.0 — better |
| Further details — not scored | ||
| Size | 112 MB | 17 MB |
| Age rating | 4+ | 4+ |
| Developer | Airmar Technology Inc. | EDG Sales International LLC |
Customer experience
AirmarCAST™
Epoch Pro
In-app purchases
AirmarCAST™
No in-app purchases
Epoch Pro
No in-app purchases









