# Marinus vs Nautical Flags Helper

The clearest difference is rating: Nautical Flags Helper at 5.0 against Marinus's 4.4. Nautical Flags Helper also leads on in-app purchases (none vs 1). Marinus's advantage is ratings volume (215 vs 1) and iOS requirement (13.0 vs 15.3). On price, ads 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. Nautical Flags Helper asks for nothing beyond the download.

Nautical Flags Helper 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.

## The numbers

| Metric | Marinus | Nautical Flags Helper |
| --- | --- | --- |
| 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/nautical-flags-helper/id6670582200/reviews)** |
| Number of ratings | **215** | 1 |
| Positive reviews | 65.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 5 weeks | — |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 113 MB | 35 MB |
| Requires iOS | **13.0** | 15.3 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Alejandro](https://appshunter.io/developer/476976572) | [Dmitrii Napolov](https://appshunter.io/developer/1766848960) |

## 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


### Nautical Flags Helper

[App page](https://appshunter.io/ios/app/nautical-flags-helper/id6670582200)

Master maritime communication with interactive flashcards and quizzes covering nautical signal flags, semaphore, and Morse code. Learn essential navigation and safety signals based on the International Code of Signals.

**Highlights:** International Code of Signals, Nautical signal flags, Semaphore signals, Morse code, Interactive flashcards, Quizzes

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Marinus free?

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

### Is Nautical Flags Helper free?

Nautical Flags Helper is free to download, with no in-app purchases.

### Which has better reviews, Marinus or Nautical Flags Helper?

Nautical Flags Helper is rated higher. Marinus averages 4.4 out of 5 from 215 ratings, while Nautical Flags Helper averages 5.0 from 1 ratings.

### Do Marinus or Nautical Flags Helper have ads?

Both Marinus and Nautical Flags Helper show ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*