# Engine Room Simulator vs Sailor Decoded

The clearest difference is update cadence: Engine Room Simulator at every 3 weeks against Sailor Decoded's every 2 months. On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Engine Room Simulator sells 2 in-app purchases, starting at $9.99 per year and Sailor Decoded sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Engine Room Simulator ships an update every 3 weeks, Sailor Decoded every 2 months. The most recent releases landed on October 7, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Engine Room Simulator | Sailor Decoded |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (4 ratings)](https://appshunter.io/ios/app/engine-room-simulator-ers/id6767850469/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 174 MB | 83 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Louie Juera](https://appshunter.io/developer/1638500957) | [Praneet Mehta](https://appshunter.io/developer/1824658163) |

## 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 |


### Sailor Decoded

[App page](https://appshunter.io/ios/app/sailor-decoded/id6773698002)

An educational platform for seafarers to deepen their maritime knowledge. It provides expert-led courses, video lectures, and practice tests to prepare users for exams and enhance their skills.

**Highlights:** Expert-led courses, Learning bundles, Video lectures, Practice tests, Exam preparation

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| GP Rating Achiever | $19.99 | one-time |
| COLREG- A Complete Guide... | $24.99 | one-time |
| GP RATING EXCELLENCE PACKAGE | $29.99 | one-time |
| Deck Cadet Package | $59.99 | one-time |
| MEO CLASS 1 PACKAGE | $59.99 | one-time |
| B.Tech Marine Engineering Campus... | $59.99 | one-time |
| MEO CLASS 2 EXCELLENCE PACKAGE | $59.99 | one-time |
| ETO ASPIRANT EXCELLENCE PACKAGE | $59.99 | one-time |
| ETO COC EXCELLENCE PACKAGE | $59.99 | one-time |
| MEO CLASS 4 PACKAGE | $59.99 | one-time |


## Frequently asked questions

### Is Engine Room Simulator free?

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

### Is Sailor Decoded free?

Sailor Decoded is free to download, with in-app purchases available.

### Do Engine Room Simulator or Sailor Decoded have ads?

Neither Engine Room Simulator nor Sailor Decoded shows ads.

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

Engine Room Simulator ships an update every 3 weeks, and Sailor Decoded every 2 months. Most recently, Engine Room Simulator was updated on October 7, 2026 and Sailor Decoded on September 22, 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.*