# CES Trainer vs Engine Room Simulator

The clearest difference is update cadence: CES Trainer at daily against Engine Room Simulator's every 3 weeks. 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 2 in-app purchases, starting at $9.99 per year. Whichever you choose, the download price is not the number that matters.

CES Trainer ships an update daily, Engine Room Simulator every 3 weeks. The most recent releases landed on September 10, 2026 and September 6, 2026 respectively.

## The numbers

| Metric | CES Trainer | Engine Room Simulator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (4 ratings)](https://appshunter.io/ios/app/engine-room-simulator-ers/id6767850469/reviews)** |
| Number of ratings | — | **4** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Daily** | Every 3 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 59 MB | 174 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/id6737857414)

**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 (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ERS Pro Yearly | $9.99 | 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.

### 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 daily, and Engine Room Simulator every 3 weeks. Most recently, CES Trainer was updated on September 10, 2026 and Engine Room Simulator on September 6, 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.*