# Sail Safe vs Master

The clearest difference is review sentiment: Master at 97% against Sail Safe's 0%. Master also leads on update cadence (fortnightly vs every 22 months) and price ($1.99 vs $4.99). On ads, in-app purchases, monetization model and device support there is nothing between them.

Sail Safe costs $4.99 and Master $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Sail Safe ships an update every 22 months, Master fortnightly. The most recent releases landed on September 22, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Sail Safe | Master |
| --- | --- | --- |
| Price | $4.99 | **$1.99** |
| Rating | — | **[4.7 (94 ratings)](https://appshunter.io/ios/app/master-nav/id1602390396/reviews)** |
| Number of ratings | — | **94** |
| Positive reviews | 0.0% of reviews | **96.9% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 22 months | **Fortnightly** |
| Monetization | Paid | Paid |
| Size | 33 MB | 117 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Prachi Pimpalkhare](https://appshunter.io/developer/359099311) | [Peterjohn Chisholm](https://appshunter.io/developer/1602390398) |

## What reviewers say

### Sail Safe

[App page](https://appshunter.io/ios/app/sail-safe/id627937212)

Master maritime navigation rules and signals with this comprehensive reference and learning tool. It features illustrated guides to vessel lights, day shapes, buoys, and the International Regulations for Preventing Collisions at Sea, along with interactive quizzes to test your knowledge.

**Highlights:** Illustrated signals and buoyage cards, Complete COLREGs reference, Interactive knowledge quizzes, Instant search functionality, Personalized favorites list, Offline functionality

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

**In-app purchases:** none


### Master

[App page](https://appshunter.io/ios/app/master-nav/id1602390396)

Learn maritime navigation rules with an interactive system designed for effective retention. This app breaks down complex regulations into manageable sections with visual aids and mnemonics. It revisits incorrect answers and provides instant graphical feedback, making the learning process intuitive and efficient.

**Highlights:** Interactive learning system, Step-by-step rule guidance, Mnemonics and memory aids, Interactive visuals, Graphical feedback on answers, Practice section with progress tracking

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

**In-app purchases:** none


## Frequently asked questions

### Is Sail Safe free?

Sail Safe costs $4.99, with no in-app purchases.

### Is Master free?

Master costs $1.99, with no in-app purchases.

### Do Sail Safe or Master have ads?

Neither Sail Safe nor Master shows ads.

### Which is updated more often, Sail Safe or Master?

Sail Safe ships an update every 22 months, and Master fortnightly. Most recently, Sail Safe was updated on September 22, 2026 and Master on October 1, 2026.

---

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