Anchor Sentry vs Raymarine
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Anchor Sentry
This app monitors your ship's position while anchored, alerting you if the anchor drags and the vessel moves outside a set perimeter. It offers advanced features like distance circles, prohibited zone alerts, and background operation for continuous monitoring.
- Anchor drag and perimeter breach alerts
- Map display with Google Maps or Navionics
- Prohibited zone setup with alerts
- Background operation
- Multi-device sync functionality
- GPX track saving
- Favorite anchoring place saving
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Anchor Sentry is an app to monitor the ship's position at anchor and inform the skipper when the anchor is dragging and thus the ship leaves the setup perimeter. Features: - Show current position on GoogleMaps map or Navionics map (To gain access to Navionics maps from this application, users with an active Navionics subscription in the Navionics Boating application must register with their Navionics credentials) - Distance circles to help finding a good anchor position - Drop anchor by tapping on map or by position or by bearing and distance - Can be used for anchoring with shore lines by watching the heading rather than the position - Tracks can be saves as GPX file for later processing - Option to set up prohibited zones which will trigger an alert when entered. These can be used indepent of the anchor state - Runs in the background even while other apps are used - Unique sync functionality which allows to pair two or more devices together to see the ships position even while out to shore for dinner - Barograph function included - Display real echo sounder data from a providing NMEA server - Optional compass overlay to help finding the bearing to the anchor - Option to show current position visible to friends and family on the Anchor Sentry website - Proximity alert between ships both using Anchor Sentry. To get warned when your neighbours anchor is dragging. - Automatic anchoring feature - Display maximum swinging circle - Save favorite anchoring places with pictures - Several setup options to customize your app
Raymarine
This app connects to Raymarine marine electronics, allowing remote control and monitoring of radar, sonar, and chartplotters. Manage charts and stream data from compatible devices for a connected boating experience.
- View and control radar, sonar, and chartplotter
- Remote boat monitoring
- Manage LightHouse Charts
- Stream and control legacy chartplotters
- Connect with YachtSense Link router
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The Raymarine App is the official digital companion for Raymarine chartplotters and connected boating. Use the Raymarine App to view and control radar, sonar, and chartplotter from your Axiom chartplotter display. Connect and monitor your boat remotely with the Raymarine YachtSense Link mobile router and manage your Raymarine LightHouse Charts right from your mobile device. The Raymarine mobile app also allows streaming and control of Raymarine legacy eS and gS Series chartplotter displays. Please note that Element chartplotter displays are not compatible with the screen mirroring feature. - We no longer support Raymarine eS and gS series chart plotters. Please ensure you're using a compatible device for the best experience. Terms of Use (EULA ) : https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is review sentiment: Anchor Sentry at 73% against Raymarine's 12%. Anchor Sentry also leads on rating (4.0 vs 1.5) and in-app purchases (none vs 6). Raymarine's advantage is price (Free vs $3.99) and ratings volume (17 vs 4). On ads, device support and iOS requirement 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
Raymarine is free to download; Anchor Sentry costs $3.99 up front. Raymarine sells 6 in-app purchases, starting at $19.99 per month. Anchor Sentry asks for nothing beyond the download.
Anchor Sentry holds the better App Store score, 4.0 against 1.5. Both are backed by a comparable volume of ratings — 4 and 17 respectively. Written reviews point the same way: 73% of Anchor Sentry's written reviews are positive against 12% of Raymarine's.
Anchor Sentry ships an update every 3 weeks, Raymarine every 4 months. The most recent releases landed on October 26, 2026 and October 27, 2026 respectively.
| Parameter | Anchor Sentry | Raymarine |
|---|---|---|
| Price | $3.99 | Free — better |
| Rating | 4.0 (4 ratings) — better | 1.5 (17 ratings) |
| Positive reviews | 73.3% of reviews — better | 12.2% of reviews |
| Number of ratings | 4 | 17 — better |
| Update frequency | Every 3 weeks — better | Every 4 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Free with in-app purchases — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15 — better | 16.0 |
| Further details — not scored | ||
| Size | 91 MB | 195 MB |
| Age rating | 4+ | 4+ |
| Developer | Michael Dieter Konz | Raymarine UK Limited |
Customer experience
Anchor Sentry
Raymarine
Bugs and requests
Anchor Sentry
Not enough reviews yet to summarise bugs or requests.
Raymarine
Reported bugs
48 issues- Connection lost message
- App closes immediately
- Fails to connect reliably
- Crashing frequently
- Disconnects and drops Wi-Fi
Show 43 moreShow fewer
- Poor connectivity
- Bad resolution
- Laggy performance
- Crashes every time
- Connects but no function
- Needs internet to connect
- Login server issues
- Owner login fails
- Pop-up never goes away
- Screen rotation not working
- Unstable connection
- Grainy display
- Ignores screen rotation
- Constantly loses connection
- Tiny text
- Screen displayed sideways
- Drops often
- Cannot log in on iPhone
- No alerts sent
- SMS alerts not working
- Support nonexistent
- Wi-Fi dropping out
- Cannot set up account
- Chart download issues
- Password incorrect message
- App does not recognize Wi-Fi
- Cannot set up boat
- Password not recognized
- Invalid login message
- Doesn't work with Element series
- Cannot interact with autopilot
- App sees connection but no access
- Frequently locks up
- Slow reaction speed
- Only read rights message
- Password symbol issues
- Account creation difficult
- Fix pinch to zoom
- Cannot create account
- Data not in correct format
- App does not recognize Wi-Fi connection
- Login issues
- Doesn't work with A series plotters
Requested features
22 requests- Improve resolution
- Simplify connection process
- Improve user-friendliness
- Allow screen rotation
- Add dark mode
Show 17 moreShow fewer
- Fix pinch to zoom
- Enable SMS alerts
- Improve alert priority settings
- Integrate with onboard network
- Improve chart download process
- Fix password symbol issues
- Allow chart updates via app
- Add demo mode
- Improve UI/UX
- Add pull-out sidebar
- Remove redundant close bar
- Improve screen real estate usage
- Improve graphics
- Make updates easier
- Support Element series mirroring
- Fix login issues
- Support A series plotters
In-app purchases
Anchor Sentry
No in-app purchases
Raymarine
- One Boat Monthly6 Months trial$19.991 Month
- Two Boats Monthly6 Months trial$37.991 Month
- One Boat Six Monthly6 Months trial$109.996 Months
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- One Boat Yearly6 Months trial$199.991 Year
- Two Boats 6 Months6 Months trial$209.996 Months
- Two Boats 1 Year6 Months trial$399.991 Year
