# Marinus vs Nautical 3D Videos Tutorial

The clearest difference is ads: Nautical 3D Videos Tutorial at none against Marinus's shown. Nautical 3D Videos Tutorial also leads on iOS requirement (9.0 vs 13.0). Marinus's advantage is update cadence (every 5 weeks vs every 21 months). On price, in-app purchases 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 and Nautical 3D Videos Tutorial sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Marinus ships an update every 5 weeks, Nautical 3D Videos Tutorial every 21 months. The most recent releases landed on October 18, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Marinus | Nautical 3D Videos Tutorial |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (215 ratings)](https://appshunter.io/ios/app/marinus-maritime-rules/id536108872/reviews)** | — |
| Number of ratings | **215** | — |
| Positive reviews | 65.3% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 5 weeks** | Every 21 months |
| Monetization | Free with in-app purchases | — |
| Size | 113 MB | 122 MB |
| Requires iOS | 13.0 | **9.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Alejandro](https://appshunter.io/developer/476976572) | [Flavio Losco](https://appshunter.io/developer/831627888) |

## 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 3D Videos Tutorial

[App page](https://appshunter.io/ios/app/nautical-3d-videos-tutorial/id1541308238)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Nautical 3D Video Tutorial | $26.99 | one-time |


## Frequently asked questions

### Is Marinus free?

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

### Is Nautical 3D Videos Tutorial free?

Nautical 3D Videos Tutorial is free to download, with in-app purchases available.

### Do Marinus or Nautical 3D Videos Tutorial have ads?

Marinus shows ads; Nautical 3D Videos Tutorial does not.

### Which is updated more often, Marinus or Nautical 3D Videos Tutorial?

Marinus ships an update every 5 weeks, and Nautical 3D Videos Tutorial every 21 months. Most recently, Marinus was updated on October 18, 2026 and Nautical 3D Videos Tutorial on September 10, 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.*