# Sailing Reference vs Maritime Master

The clearest difference is in-app purchases: Maritime Master at none against Sailing Reference's 2. Maritime Master also leads on update cadence (every 6 weeks vs every 3 months) and price ($1.99 vs $2.99). On ads, device support and iOS requirement there is nothing between them.

Sailing Reference costs $2.99 and Maritime Master $1.99 up front. Sailing Reference sells 2 one-off in-app purchases. Maritime Master asks for nothing beyond the download.

Sailing Reference ships an update every 3 months, Maritime Master every 6 weeks. The most recent releases landed on October 10, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Sailing Reference | Maritime Master |
| --- | --- | --- |
| Price | $2.99 | **$1.99** |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 6 weeks** |
| Monetization | Paid | — |
| Size | 16 MB | 1 MB |
| Requires iOS | **15.6** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Oliver Shingler](https://appshunter.io/developer/886565740) | [MARITIME MASTER LIMITED](https://appshunter.io/developer/1107589346) |

## What reviewers say

### Sailing Reference

[App page](https://appshunter.io/ios/app/sailing-reference/id978062677)

This comprehensive nautical navigation guide offers offline access to essential sailing information, including how-to guides, calculators for tides and courses, and flashcards for COLREGs. It also features a race timer and knot-tying animations.

**Highlights:** Offline nautical reference guide, Tidal stream and time calculators, Course to steer estimation, COLREGs/IRPCS flashcards, Race timer and lap timer, Nautical knot animations

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Flashcards | $0.99 | one-time |
| Knots | $0.99 | one-time |


### Maritime Master

[App page](https://appshunter.io/ios/app/maritime-master-nav-lights/id6747762523)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Sailing Reference free?

Sailing Reference costs $2.99, and also offers in-app purchases.

### Is Maritime Master free?

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

### Do Sailing Reference or Maritime Master have ads?

Neither Sailing Reference nor Maritime Master shows ads.

### Which is updated more often, Sailing Reference or Maritime Master?

Sailing Reference ships an update every 3 months, and Maritime Master every 6 weeks. Most recently, Sailing Reference was updated on October 10, 2026 and Maritime Master on October 14, 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.*