# Generic Operational Engine CES vs MARPOL

The clearest difference is price: MARPOL at $1.99 against Generic Operational Engine CES's $4.99. Generic Operational Engine CES's advantage is iOS requirement (10.0 vs 17.5). On ads, in-app purchases and device support there is nothing between them.

Generic Operational Engine CES costs $4.99 and MARPOL $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Generic Operational Engine CES | MARPOL |
| --- | --- | --- |
| Price | $4.99 | **$1.99** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | — | Every 2 months |
| Monetization | — | Paid |
| Size | 42 MB | 36 MB |
| Requires iOS | **10.0** | 17.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Maxim Lukyanenko](https://appshunter.io/developer/1496252741) | [OLEKSANDR IZERGIN](https://appshunter.io/developer/1678396126) |

## What reviewers say

### Generic Operational Engine CES

[App page](https://appshunter.io/ios/app/generic-operational-engine-ces/id6468913935)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Generic Operational Engine CES free?

Generic Operational Engine CES costs $4.99, with no in-app purchases.

### Is MARPOL free?

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

### Do Generic Operational Engine CES or MARPOL have ads?

Neither Generic Operational Engine CES nor MARPOL shows ads.

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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.*