# Rule Master vs Nautical Rules

The clearest difference is review sentiment: Nautical Rules at 100% against Rule Master's 43%. Nautical Rules also leads on price (Free vs $9.99) and update cadence (every 3 weeks vs every 3 months). Rule Master's advantage is ratings volume (292 vs 4) and chart position (#32 vs unranked). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Nautical Rules is free to download; Rule Master costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Nautical Rules holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Rule Master has 292 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 43% of Rule Master's written reviews are positive against 100% of Nautical Rules's.

Rule Master ships an update every 3 months, Nautical Rules every 3 weeks. The most recent releases landed on October 15, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Rule Master | Nautical Rules |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | [4.8 (292 ratings)](https://appshunter.io/ios/app/rule-master/id1617543595/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/nautical-rules/id6756220989/reviews)** |
| Number of ratings | **292** | 4 |
| Positive reviews | 42.9% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#32** | — |
| Size | 13 MB | 5 MB |
| Requires iOS | **16.0** | 17.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Universal Queue LLC](https://appshunter.io/developer/1577058225) | [Joseph Kim](https://appshunter.io/developer/1855404156) |

## What reviewers say

### Rule Master

[App page](https://appshunter.io/ios/app/rule-master/id1617543595)

**Currently charting:** #32 Top Paid · Navigation (US App Store)

Master maritime navigation rules with this comprehensive quiz app. It offers extensive question banks, custom filters, and detailed progress tracking for both new and experienced sailors. Generate custom exams and access a digital handbook for efficient learning and exam preparation.

**Highlights:** 10,000+ question-answer combinations, Custom question filters, Fill-in-the-blank questions, Offline capability, Exam PDF generation, Digital Navigation Rules handbook, Progress tracking and statistics

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 User friendly and easy to navigate
- 📚 Great information for studying and review
- 💯 Helpful for exam preparation and confidence
- ✨ Beautifully designed and functional app
- ✅ Worth a download

**What reviewers complain about**

- 💰 Free apps are just as good
- 🐛 Questions disappear off the screen
- 🤏 Diagrams are too small to see details
- ❓ Incomplete questions with missing text
- ⚠️ Some answers are not 100% accurate

**Reported bugs**

- Questions disappear off the bottom of the screen
- Diagrams are too small to identify vessels
- Some questions have character limits over the margin
- App doesn't display quiz and verbatim in a usable manner
- Incomplete questions showing three dots (...)

**Requested features**

- Link relevant COLREG rule when answering correctly and incorrectly
- Expand subjects to include chemistry or history
- Improvements in tracking missed questions for training
- Display full question text when it's cut off


### Nautical Rules

[App page](https://appshunter.io/ios/app/nautical-rules/id6756220989)

Master USCG Navigation Rules with a comprehensive question bank and smart study features. Track your progress, practice for exams, and study offline to navigate with confidence.

**Highlights:** 1,200+ practice questions, Inland and International waters coverage, Detailed explanations, Customizable tests, Offline study capability, Progress tracking dashboard, Accuracy by rule statistics

**In-app purchases:** none


## Frequently asked questions

### Is Rule Master free?

Rule Master costs $9.99, with no in-app purchases.

### Is Nautical Rules free?

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

### Which has better reviews, Rule Master or Nautical Rules?

Nautical Rules is rated higher. Rule Master averages 4.8 out of 5 from 292 ratings, while Nautical Rules averages 5.0 from 4 ratings.

### Do Rule Master or Nautical Rules have ads?

Neither Rule Master nor Nautical Rules shows ads.

### Which is updated more often, Rule Master or Nautical Rules?

Rule Master ships an update every 3 months, and Nautical Rules every 3 weeks. Most recently, Rule Master was updated on October 15, 2026 and Nautical Rules on October 6, 2026.

---

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