Boat Beacon vs Cortex Onboard
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Boat Beacon
This marine navigation app provides real-time AIS data for collision avoidance and position sharing. It offers over-the-horizon warnings, background operation, and a user-friendly interface for boaters.
- Collision warnings with CPA calculations
- Real-time AIS ship tracking
- Background operation for continuous alerts
- Position sharing with other users
- Augmented Reality view (IAP)
- Man Overboard and Anchor Watch alarms (IAP)
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Boat Beacon is an internet AIS receiver and transmitter for your iPhone and iPad. It is the only AIS ship tracking app to provide Collision Warnings, share your boat’s position & use real-time AIS data. Connected to the largest network of AIS shore receivers world-wide covering most major ports, harbours and popular coastal areas. “An outstanding app, with great potential. Both interesting to use and very user friendly. This could be a life saver and especially of interest to small boat users. Everyone who goes on the water should have this on and use it!” ***** Sun Dream, App Store Review Boat Beacon is designed for boaters & provides continuous Bearing, Range & Closest Point of Approach (CPA) calculations and alarms in addition to standard AIS information even when in the background. Boat Beacon does not require any external AIS transponder or receiver equipment. Key Features ------------ Over-the-horizon collision avoidance (30 miles radius) using continuous CPA calculations - highlights boats that are on a potential collision course and alerts you with an alarm. Continually transmits and receives position information via the internet and calculates and alarms CPA even when the app is in the background. Shares your position with Internet AIS Systems & apps & other Boat Beacon users in real time. Real time ship map view with North up & Heading up modes so you can look in the direction of the ships on the map to locate them. Nav display showing own boat's speed, course, heading and position. SART Alarm Man Overboard tracking, Anchor watch & Theft alarms (IAP). Apple Watch App included Siri voice commands Export tracks Boat-to-Boat & Group Messaging. Local AIS & GPS via Wifi. Boat Beacon InApp Add-ons:- LiveView - Augmented Reality view with ships, compass & horizon overlaid. Works with FLIROne IR cameras as well to see ships & people in the dark & fog (IAP) "AIS Sharing" to other apps like Navionics & iNavX (IAP subscription) US, UK and IE Marine raster charts (IAP). MOB and Anchor Watch (IAP). Let Friends and Family see where you are and where you're headed to with our free Boat Watch app or on web-based AIS systems like MarineTraffic which have free web viewers available. Arm all the crews in a race with Boat Beacon and have real time updates on the race positions on the water and back in the club house. Keep a watch and in touch with other boats in your flotilla when sailing in a group. Boat Beacon requires internet access to work. Most popular coastal areas have cellular data access extending 12 or more miles out to sea. Subscriptions The "AIS Sharing " subscription is monthly ($5.99) or yearly ($16.49), and will automatically renew at the end of the subscription period unless auto-renew is turned off at least 24-hours before the end of the current period. Payment will be charged to your iTunes Account at confirmation of purchase, and will be charged for renewal within 24-hours prior to the end of the current period. Subscriptions may be managed by the iTunes account holder and auto-renewal may be turned off by going to Account Settings after purchase. No cancellation of the current subscription is allowed during active subscription period. Terms of Use: http://seanav.net/termsofuse.php Privacy Policy: http://seanav.net/privacy.php Support: help@pocketmariner.com Your position can be shared and seen on all our apps without using an MMSI number. To be seen on Global AIS systems like MarineTraffic you need an MMSI number. In the US you can obtain one by visiting http://www.boatus.com/mmsi or email us for a free internet MMSI number. Please note that continued use of GPS running in the background can dramatically decrease battery life. NOT FOR NAVIGATION Boat Beacon should only be used for basic navigation reference and should not be solely relied upon to determine precise locations, proximity, distance, or direction. You will not be visible to other ships on VHF only AIS systems.
Cortex Onboard
This app allows you to configure and update your marine electronics from your mobile device. Monitor vessel data, receive alerts, and manage features like Anchor Watch from anywhere on board.
- Configure and update Cortex devices
- View AIS information and alerts
- Manage Anchor Watch
- Monitor vessel sensors
- Connect NMEA 2000 instruments
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Cortex Onboard is free with your Cortex. Use it to configure your Cortex Hub and download updates to your Cortex devices with new features and improvements. You can also use Cortex Onboard to receive and manage alerts, view AIS information and instrument data anywhere on board your boat. View out-of-the-box sensors or NMEA 2000 networked instruments. - Setup is easy and free. - Use Cortex Onboard to configure and update your Cortex devices easily. - View AIS information and receive alerts on board direct to your device. - Manage Anchor Watch from the palm of your hand anywhere on board. - Use the Cortex Hub’s built-in sensors for battery level, barometric pressure and boat position. - Connect your Cortex Hub to NMEA 2000, or an external sensor, to add monitoring for wind, depth, bilge high water, temperature, shore power or security. - The Cortex Hub supports up to 10 WiFi devices (includes Handsets).
Screenshots
Verdict
The clearest difference is price: Cortex Onboard at Free against Boat Beacon's $14.99. Cortex Onboard also leads on in-app purchases (none vs 6). Boat Beacon's advantage is rating (4.6 vs 3.8) and ratings volume (866 vs 12). On review sentiment, update cadence, ads 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
Cortex Onboard is free to download; Boat Beacon costs $14.99 up front. Boat Beacon sells 6 in-app purchases, starting at $5.99 per month. Cortex Onboard asks for nothing beyond the download.
Boat Beacon holds the better App Store score, 4.6 against 3.8. That said, the two scores are not equally well evidenced: Boat Beacon has 866 ratings behind it against 12, so its average is the more settled of the two. Written reviews point the same way: 61% of Boat Beacon's written reviews are positive against 56% of Cortex Onboard's.
Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 22, 2026 and June 7, 2026 respectively.
| Parameter | Boat Beacon | Cortex Onboard |
|---|---|---|
| Price | $14.99 | Free — better |
| Rating | 4.6 (866 ratings) — better | 3.8 (12 ratings) |
| Positive reviews | 61.1% of reviews — better | 55.6% of reviews |
| Number of ratings | 866 — better | 12 |
| Update frequency | Every 2 months | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Best chart rank | #107 — better | — |
| Devices | iPhone, iPad, iPod, Apple Watch — better | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 15.6 |
| Further details — not scored | ||
| Size | 152 MB | 376 MB |
| Age rating | 4+ | 4+ |
| Developer | Pocket Mariner Ltd. | Garmin New Zealand Ltd |
Customer experience
Boat Beacon
Cortex Onboard
Bugs and requests
Boat Beacon
Reported bugs
4 issues- Crashes when panning or changing settings
- Phantom ships not disappearing
- Inaccurate position data
- Compatibility issues with older devices
Requested features
4 requests- Add marine charts
- Improve search functionality
- Offline mode
- Integrate with other navigation apps
Cortex Onboard
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Boat Beacon
- AIS Share$5.991 Month
- AIS Share$16.491 Year
- Anchor Watch and Man Overboard$4.99
- Live View Upgrade$7.99
- NOAA US Marine Charts$9.99
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- UK & IE Marine Charts$12.99
Cortex Onboard
No in-app purchases








