# Singular vs Engine Room Simulator

The clearest difference is rating: Engine Room Simulator at 4.8 against Singular's 1.0. Engine Room Simulator also leads on ads (none vs shown) and ratings volume (4 vs 1). Singular's advantage is update cadence (daily vs every 3 weeks). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. Singular sells 3 in-app purchases, starting at $4.99 per 7 days 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.

Engine Room Simulator holds the better App Store score, 4.8 against 1.0. Both are backed by a comparable volume of ratings — 1 and 4 respectively.

Singular ships an update daily, Engine Room Simulator every 3 weeks. The most recent releases landed on August 25, 2026 and September 6, 2026 respectively.

## The numbers

| Metric | Singular | Engine Room Simulator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (1 ratings)](https://appshunter.io/ios/app/singular-circuit-simulator/id6760304619/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 | Yes | **No** |
| Update frequency | **Daily** | Every 3 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 18 MB | 174 MB |
| Requires iOS | 18.4 | **16.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Ali Mert TUFEKCI](https://appshunter.io/developer/1483311309) | [Louie Juera](https://appshunter.io/developer/1638500957) |

## What reviewers say

### Singular

[App page](https://appshunter.io/ios/app/singular-circuit-simulator/id6760304619)

Design, simulate, and analyze analog and logic circuits on your mobile device. Features a powerful engine, a wide range of components, and an intuitive editor. Ideal for students, makers, and professionals.

**Highlights:** Analog & logic circuit simulation, Drag-and-drop circuit editor, Real-time transient, DC, and AC analysis, 40+ electronic components, Real-time oscilloscope, Offline functionality, Export and import circuits

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Plan | $4.99 | per 7 days |
| Weekly Plan | $9.99 | per month |
| Yearly Plan | $29.99 | per year |


### 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 Singular free?

Singular 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, Singular or Engine Room Simulator?

Engine Room Simulator is rated higher. Singular averages 1.0 out of 5 from 1 ratings, while Engine Room Simulator averages 4.8 from 4 ratings.

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

Singular shows ads; Engine Room Simulator does not.

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

Singular ships an update daily, and Engine Room Simulator every 3 weeks. Most recently, Singular was updated on August 25, 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.*