# Anchor Sentry vs Raymarine

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.

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.

## The numbers

| Metric | Anchor Sentry | Raymarine |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[4.0 (4 ratings)](https://appshunter.io/ios/app/anchor-sentry/id1422478182/reviews)** | [1.5 (17 ratings)](https://appshunter.io/ios/app/raymarine/id1502278726/reviews) |
| Number of ratings | 4 | **17** |
| Positive reviews | **73.3% of reviews** | 12.2% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 4 months |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 91 MB | 195 MB |
| Requires iOS | **15** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Michael Dieter Konz](https://appshunter.io/developer/1422478181) | [Raymarine UK Limited](https://appshunter.io/developer/456592425) |

## What reviewers say

### Anchor Sentry

[App page](https://appshunter.io/ios/app/anchor-sentry/id1422478182)

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.

**Highlights:** 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

**In-app purchases:** none


### Raymarine

[App page](https://appshunter.io/ios/app/raymarine/id1502278726)

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.

**Highlights:** View and control radar, sonar, and chartplotter, Remote boat monitoring, Manage LightHouse Charts, Stream and control legacy chartplotters, Connect with YachtSense Link router

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| One Boat Monthly | $19.99 | per month |
| Two Boats Monthly | $37.99 | per month |
| One Boat Six Monthly | $109.99 | per 6 months |
| One Boat Yearly | $199.99 | per year |
| Two Boats 6 Months | $209.99 | per 6 months |
| Two Boats 1 Year | $399.99 | per year |

**What reviewers like**

- 👍 Works when connected
- 👍 Screen mirroring functional
- 👍 Good for replicating screen
- 👍 Can control plotter from iPad
- 👍 Adds another touchscreen

**What reviewers complain about**

- 🐛 Fails to connect reliably
- 🐛 Closes immediately
- 🐛 Connection lost message
- 🐛 Unusable due to crashing
- 🐛 Continuously disconnects

**Reported bugs**

- Connection lost message
- App closes immediately
- Fails to connect reliably
- Crashing frequently
- Disconnects and drops Wi-Fi

**Requested features**

- Improve resolution
- Simplify connection process
- Improve user-friendliness
- Allow screen rotation
- Add dark mode


## Frequently asked questions

### Is Anchor Sentry free?

Anchor Sentry costs $3.99, with no in-app purchases.

### Is Raymarine free?

Raymarine is free to download, with in-app purchases available.

### Which has better reviews, Anchor Sentry or Raymarine?

Anchor Sentry is rated higher. Anchor Sentry averages 4.0 out of 5 from 4 ratings, while Raymarine averages 1.5 from 17 ratings.

### Do Anchor Sentry or Raymarine have ads?

Neither Anchor Sentry nor Raymarine shows ads.

### Which is updated more often, Anchor Sentry or Raymarine?

Anchor Sentry ships an update every 3 weeks, and Raymarine every 4 months. Most recently, Anchor Sentry was updated on October 26, 2026 and Raymarine on October 27, 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.*