# MARPOL vs Maritime Master

The clearest difference is review sentiment: Maritime Master at 100% against MARPOL's 0%. Maritime Master also leads on update cadence (every 3 weeks vs every 2 months). MARPOL's advantage is price ($1.99 vs $9.99). On ads, in-app purchases, monetization model and device support there is nothing between them.

MARPOL costs $1.99 and Maritime Master $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

MARPOL ships an update every 2 months, Maritime Master every 3 weeks. The most recent releases landed on October 10, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | MARPOL | Maritime Master |
| --- | --- | --- |
| Price | **$1.99** | $9.99 |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/maritime-master-oow/id6748314674/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Paid | Paid |
| Size | 36 MB | 21 MB |
| Requires iOS | 17.5 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [OLEKSANDR IZERGIN](https://appshunter.io/developer/1678396126) | [MARITIME MASTER LIMITED](https://appshunter.io/developer/1107589346) |

## What reviewers say

### MARPOL

[App page](https://appshunter.io/ios/app/marpol/id6563146975)

This interactive course covers the MARPOL Convention, including all annexes with detailed visuals. Engage with varied tests to master the material and aim for captain-level knowledge.

**Highlights:** Interactive MARPOL Convention course, All MARPOL Annexes included, Detailed images, Varied tests and tasks, Progress tracking to captain level

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

**In-app purchases:** none


### Maritime Master

[App page](https://appshunter.io/ios/app/maritime-master-oow/id6748314674)

Master maritime knowledge with this comprehensive app. Practice radar plotting, perform essential navigation and ship calculations, and review nautical regulations and procedures. Includes interactive learning tools and exam preparation features for deck cadets and officers.

**Highlights:** Radar plotting simulator, Navigation and ship calculation suite, Nautical regulations library, COLREGs mastery tools, Interactive learning games, OOW progress tracker

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is MARPOL free?

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

### Is Maritime Master free?

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

### Do MARPOL or Maritime Master have ads?

Neither MARPOL nor Maritime Master shows ads.

### Which is updated more often, MARPOL or Maritime Master?

MARPOL ships an update every 2 months, and Maritime Master every 3 weeks. Most recently, MARPOL was updated on October 10, 2026 and Maritime Master on October 14, 2026.

---

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