# Engine Room Simulator vs IRIS

The clearest difference is in-app purchases: IRIS at none against Engine Room Simulator's 2. IRIS also leads on update cadence (every 2 days vs every 3 weeks). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Engine Room Simulator sells 2 in-app purchases, starting at $9.99 per year. IRIS asks for nothing beyond the download.

Engine Room Simulator ships an update every 3 weeks, IRIS every 2 days. The most recent releases landed on October 21, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Engine Room Simulator | IRIS |
| --- | --- | --- |
| 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 | **No** |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 2 days** |
| Monetization | Free with in-app purchases | — |
| Size | 174 MB | 58 MB |
| Requires iOS | **16.0** | 16.4 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Louie Juera](https://appshunter.io/developer/1638500957) | [ELOSOFT INC](https://appshunter.io/developer/1582738042) |

## What reviewers say

### 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 |


### IRIS

[App page](https://appshunter.io/ios/app/iris-sams/id6802582212)

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

**In-app purchases:** none


## Frequently asked questions

### Is Engine Room Simulator free?

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

### Is IRIS free?

IRIS is free to download, with no in-app purchases.

### Do Engine Room Simulator or IRIS have ads?

Neither Engine Room Simulator nor IRIS shows ads.

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

Engine Room Simulator ships an update every 3 weeks, and IRIS every 2 days. Most recently, Engine Room Simulator was updated on October 21, 2026 and IRIS on October 9, 2026.

---

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