# MARPOL vs Maritime Master

The clearest difference is update cadence: Maritime Master at every 11 days against MARPOL's every 2 months. MARPOL's advantage is price ($1.99 vs $3.99). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

MARPOL costs $1.99 and Maritime Master $3.99 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 11 days. The most recent releases landed on October 10, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | MARPOL | Maritime Master |
| --- | --- | --- |
| Price | **$1.99** | $3.99 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 11 days** |
| Monetization | Paid | — |
| Size | 36 MB | 5 MB |
| Requires iOS | **17.5** | 17.6 |
| 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-colregs/id6756098554)

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

**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 $3.99, 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 11 days. Most recently, MARPOL was updated on October 10, 2026 and Maritime Master on October 24, 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.*