# Marinus vs Marine Radar Simulator

The clearest difference is rating: Marine Radar Simulator at 5.0 against Marinus's 4.4. Marine Radar Simulator also leads on in-app purchases (none vs 1) and ads (none vs shown). Marinus's advantage is ratings volume (215 vs 1). On price and device support there is nothing between them.

Both are free to download. Marinus sells 1 in-app purchase, starting at $8.99 per year. Marine Radar Simulator asks for nothing beyond the download.

Marine Radar Simulator holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Marinus has 215 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 65% of Marinus's written reviews are positive against 100% of Marine Radar Simulator's.

Marinus ships an update every 5 weeks, Marine Radar Simulator every 2 weeks. Both last shipped on November 1, 2026.

## The numbers

| Metric | Marinus | Marine Radar Simulator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (215 ratings)](https://appshunter.io/ios/app/marinus-maritime-rules/id536108872/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/marine-radar-simulator/id906962243/reviews)** |
| Number of ratings | **215** | 1 |
| Positive reviews | 65.3% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 5 weeks | **Every 2 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 113 MB | 11 MB |
| Requires iOS | 13.0 | **6.1** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Alejandro](https://appshunter.io/developer/476976572) | [株式会社フルノソフテック](https://appshunter.io/developer/1015812767) |

## What reviewers say

### Marinus

[App page](https://appshunter.io/ios/app/marinus-maritime-rules/id536108872)

This app provides comprehensive guidance on maritime navigation rules and signals. It offers detailed information on flags, lights, sounds, and buoyage systems, along with interactive quizzes and a map feature. Designed for sailors, it ensures safe navigation on any vessel.

**Highlights:** Maritime flags and meanings, Weather scales and cloud identification, Sound signal guidance, Vessel navigation light diagrams, Day shape identification, Safe navigation maneuvers, Morse code decoder, IALA Buoyage System, Radio communication guidelines, COLREGs text

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Marinus PRO | $8.99 | per year |

**What reviewers like**

- 👍 Great app for learning
- 👍 Useful study aid
- 👍 Very helpful for mariners
- 👍 Good information provided
- 👍 Easy to use

**What reviewers complain about**

- 👎 Swamped with ads
- 👎 Broken app functionality
- 👎 Subscription model is a money grab
- 👎 Lifetime pro withdrawn
- 👎 Scam for changing to subscription

**Reported bugs**

- App not working, ads won't clear
- App crashes frequently
- Mistake with sounds
- App crashes after 10-15 seconds

**Requested features**

- Settings for Buoyage A & B & combined
- Search feature
- Combine sounds and lights
- Add tides information
- More free version functionality


### Marine Radar Simulator

[App page](https://appshunter.io/ios/app/marine-radar-simulator/id906962243)

Practice using marine radar systems in a simulated offline environment. Learn to interpret radar echoes and adjust settings before navigating with real equipment. This tool is designed for educational purposes to familiarize users with radar operations.

**Highlights:** Offline radar simulation, Learn radar echo interpretation, Adjustable menu settings, Practice before onboard navigation, Simulated DRS4W functionality

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Marinus free?

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

### Is Marine Radar Simulator free?

Marine Radar Simulator is free to download, with no in-app purchases.

### Which has better reviews, Marinus or Marine Radar Simulator?

Marine Radar Simulator is rated higher. Marinus averages 4.4 out of 5 from 215 ratings, while Marine Radar Simulator averages 5.0 from 1 ratings.

### Do Marinus or Marine Radar Simulator have ads?

Marinus shows ads; Marine Radar Simulator does not.

### Which is updated more often, Marinus or Marine Radar Simulator?

Marinus ships an update every 5 weeks, and Marine Radar Simulator every 2 weeks. Most recently, Marinus was updated on November 1, 2026 and Marine Radar Simulator on November 1, 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.*