# Navigation Rules vs MyCG

The clearest difference is review sentiment: Navigation Rules at 86% against MyCG's 5%. Navigation Rules also leads on rating (4.8 vs 1.2) and update cadence (every 4 months vs every 16 months). MyCG's advantage is price (Free vs $3.99). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

MyCG is free to download; Navigation Rules costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Navigation Rules holds the better App Store score, 4.8 against 1.2. Both are backed by a comparable volume of ratings — 386 and 446 respectively. Written reviews point the same way: 86% of Navigation Rules's written reviews are positive against 5% of MyCG's.

Navigation Rules ships an update every 4 months, MyCG every 16 months. The most recent releases landed on September 26, 2026 and July 5, 2026 respectively.

## The numbers

| Metric | Navigation Rules | MyCG |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[4.8 (386 ratings)](https://appshunter.io/ios/app/navigation-rules/id327936562/reviews)** | [1.2 (446 ratings)](https://appshunter.io/ios/app/mycg/id1548947894/reviews) |
| Number of ratings | 386 | **446** |
| Positive reviews | **85.7% of reviews** | 5.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 16 months |
| Monetization | Free | Free |
| Best chart rank | **#133** | — |
| Size | 35 MB | 160 MB |
| Requires iOS | **9.3** | 16.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | +4 | 9+ |
| Developer | [Calculated Industries](https://appshunter.io/developer/370406449) | [U.S. Coast Guard](https://appshunter.io/developer/1435197546) |

## What reviewers say

### Navigation Rules

[App page](https://appshunter.io/ios/app/navigation-rules/id327936562)

**Currently charting:** #133 Top Paid · Reference (US App Store)

Access the complete International Regulations for Preventing Collisions at Sea (COLREGs) and Inland Navigation Rules. This app provides a searchable, annotated version of boating regulations, ideal for quick reference and sharing information.

**Highlights:** COLREGs and Inland Navigation Rules, Annotated table of contents, Search function, Favorites page, Email sharing

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

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to navigate and user-friendly interface
- 📚 Comprehensive reference material for navigation rules
- 🚀 Quick access to rules on-the-go
- 🎓 Excellent study tool for maritime exams and licenses
- 📖 Well-organized table of contents and structure

**What reviewers complain about**

- 🐛 Poor navigation between rules requires multiple menu presses
- 📄 Walls of text with limited visual content
- 🎨 Inconsistent formatting in some sections (e.g., 8F(iii))
- ❌ Limited additional features beyond basic text content
- 🔄 Clicking definitions forces users to search for original page again

**Reported bugs**

- Formatting inconsistency in rule 8F(iii)
- Navigation issues when jumping between non-sequential rules
- Definition links don't provide easy return to original page
- Typos present in content

**Requested features**

- Quiz or test functionality for self-assessment
- Easier rule-to-rule navigation without menu cycling
- More visual illustrations and diagrams throughout
- Back button functionality when accessing definitions
- Option to separate international and inland rules


### MyCG

[App page](https://appshunter.io/ios/app/mycg/id1548947894)

Stay informed about the United States Coast Guard with instant updates, the latest news, and an easy-to-use directory. Access information about upcoming events and more, all in one place.

**Highlights:** Instant notifications, Latest USCG news, Contact directory, Event updates

**In-app purchases:** none

**What reviewers like**

- ⭐ Great app
- 🎧 Useful for listening to podcasts

**What reviewers complain about**

- 🗓️ Outdated information
- 🔗 Broken links
- 🤔 Misleading feedback articles
- 🚫 Removed features (beard poll)
- 💤 Lack of updates and relevance

**Reported bugs**

- Inaccurate unit information
- Glitchy and non-functional

**Requested features**

- Bring back beards poll
- Add rum rations
- Improve communication and transparency


## Frequently asked questions

### Is Navigation Rules free?

Navigation Rules costs $3.99, with no in-app purchases.

### Is MyCG free?

MyCG is free to download, with no in-app purchases.

### Which has better reviews, Navigation Rules or MyCG?

Navigation Rules is rated higher. Navigation Rules averages 4.8 out of 5 from 386 ratings, while MyCG averages 1.2 from 446 ratings.

### Do Navigation Rules or MyCG have ads?

Neither Navigation Rules nor MyCG shows ads.

### Which is updated more often, Navigation Rules or MyCG?

Navigation Rules ships an update every 4 months, and MyCG every 16 months. Most recently, Navigation Rules was updated on September 26, 2026 and MyCG on July 5, 2026.

---

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