# IALA Navigation Marks vs Master

The clearest difference is review sentiment: Master at 97% against IALA Navigation Marks's 50%. Master also leads on update cadence (fortnightly vs every 23 months) and chart position (#196 vs unranked). IALA Navigation Marks's advantage is device support (4 vs 2). On price, ads, in-app purchases and monetization model there is nothing between them.

IALA Navigation Marks costs $1.99 and Master $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

IALA Navigation Marks ships an update every 23 months, Master fortnightly. The most recent releases landed on October 16, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | IALA Navigation Marks | Master |
| --- | --- | --- |
| Price | $1.99 | $1.99 |
| Rating | — | **[4.7 (94 ratings)](https://appshunter.io/ios/app/master-nav/id1602390396/reviews)** |
| Number of ratings | — | **94** |
| Positive reviews | 50.0% of reviews | **96.9% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 23 months | **Fortnightly** |
| Monetization | Paid | Paid |
| Best chart rank | — | **#196** |
| Size | 28 MB | 117 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Smirnov Yury](https://appshunter.io/developer/420438416) | [Peterjohn Chisholm](https://appshunter.io/developer/1602390398) |

## What reviewers say

### IALA Navigation Marks

[App page](https://appshunter.io/ios/app/iala-navigation-marks/id1224059816)

A quick reference guide for sailors and students to identify maritime navigation marks according to the IALA system. It covers buoy shapes, colors, topmarks, and light rhythms for various mark types, aiding in exam preparation and on-water identification.

**Highlights:** Identify lateral, cardinal, and special marks, Covers buoy shape, color, topmark, and light rhythm, Includes day and night views, Practical study aid for seamanship training, Quick lookup on iPhone and iPad

**In-app purchases:** none


### Master

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

**Currently charting:** #196 Top Paid · Education (US App Store)

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 IALA Navigation Marks free?

IALA Navigation Marks costs $1.99, with no in-app purchases.

### Is Master free?

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

### Do IALA Navigation Marks or Master have ads?

Neither IALA Navigation Marks nor Master shows ads.

### Which is updated more often, IALA Navigation Marks or Master?

IALA Navigation Marks ships an update every 23 months, and Master fortnightly. Most recently, IALA Navigation Marks was updated on October 16, 2026 and Master on October 17, 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.*