# CES Trainer vs Engine Room Simulator

The clearest difference is update cadence: Engine Room Simulator at monthly against CES Trainer's every 11 months. Engine Room Simulator also leads on ratings volume (4 vs 1). CES Trainer's advantage is monetization model (free vs free with in-app purchases) and rating (5.0 vs 4.8). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. CES Trainer sells 1 one-off in-app purchase and Engine Room Simulator sells 3 in-app purchases, starting at $12.99 per month. Whichever you choose, the download price is not the number that matters.

CES Trainer holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 1 and 4 respectively.

CES Trainer ships an update every 11 months, Engine Room Simulator monthly. The most recent releases landed on October 30, 2026 and November 9, 2026 respectively.

## The numbers

| Metric | CES Trainer | Engine Room Simulator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ces-trainer-seafarer-test/id6737857414/reviews)** | [4.8 (4 ratings)](https://appshunter.io/ios/app/engine-room-simulator-ers/id6767850469/reviews) |
| Number of ratings | 1 | **4** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 11 months | **Monthly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 62 MB | 189 MB |
| Requires iOS | 17.4 | **16.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 12+ | 4+ |
| Developer | [Yevgenii Kryzhanivskyi](https://appshunter.io/developer/1778319692) | [Louie Juera](https://appshunter.io/developer/1638500957) |

## What reviewers say

### CES Trainer

[App page](https://appshunter.io/ios/app/ces-trainer-seafarer-test/id6737857414)

Prepare for the CES seafarer test with practice questions and instant feedback. Study all questions with answers, track your readiness score, and review mistakes. Works offline with a clean design and dark mode.

**Highlights:** Practice CES-format questions, Offline access to all questions, Training and exam modes, Readiness score tracking, Review mistakes and save favorites, Searchable question bank

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Buy me a beer | $4.99 | one-time |


### Engine Room Simulator

[App page](https://appshunter.io/ios/app/engine-room-simulator-ers/id6767850469)

This app offers a high-fidelity simulation for marine engineering training. It allows users to practice shipboard engine-room procedures, from safety training to full voyage simulation, with clear guidance and feedback. Ideal for cadets, students, and seafarers to build practical skills anytime, anywhere.

**Highlights:** High-fidelity marine engineering simulation, PPE safety training and induction, Generator synchronization and startup, Full voyage simulation, Guided and assessment learning modes, Offline practice capability

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ERS Pro Monthly | $12.99 | per month |
| ERS Pro Yearly | $24.99 | per year |
| ERS Pro Lifetime | $19.99 | one-time |


## Frequently asked questions

### Is CES Trainer free?

CES Trainer is free to download, with in-app purchases available.

### Is Engine Room Simulator free?

Engine Room Simulator is free to download, with in-app purchases available.

### Which has better reviews, CES Trainer or Engine Room Simulator?

CES Trainer is rated higher. CES Trainer averages 5.0 out of 5 from 1 ratings, while Engine Room Simulator averages 4.8 from 4 ratings.

### Do CES Trainer or Engine Room Simulator have ads?

Neither CES Trainer nor Engine Room Simulator shows ads.

### Which is updated more often, CES Trainer or Engine Room Simulator?

CES Trainer ships an update every 11 months, and Engine Room Simulator monthly. Most recently, CES Trainer was updated on October 30, 2026 and Engine Room Simulator on November 9, 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.*