# Engine Simulator vs Model Engine Builder

The clearest difference is ads: Engine Simulator at none against Model Engine Builder's shown. Engine Simulator also leads on chart position (#34 vs unranked). Model Engine Builder's advantage is update cadence (every 2 weeks vs every 2 months) and iOS requirement (15.6 vs 18.6). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Engine Simulator sells 1 one-off in-app purchase and Model Engine Builder sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Engine Simulator ships an update every 2 months, Model Engine Builder every 2 weeks. The most recent releases landed on October 6, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Engine Simulator | Model Engine Builder |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (98 ratings)](https://appshunter.io/ios/app/engine-simulator/id6772016143/reviews)** | — |
| Number of ratings | **98** | — |
| Positive reviews | 80.8% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | — |
| Best chart rank | **#34** | — |
| Size | 22 MB | 20 MB |
| Requires iOS | 18.6 | **15.6** |
| Devices | **iPhone, iPad, Mac** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [MUHAMMAD SAAD ATA](https://appshunter.io/developer/6772016385) | [MIN GYu OH](https://appshunter.io/developer/6803589847) |

## What reviewers say

### Engine Simulator

[App page](https://appshunter.io/ios/app/engine-simulator/id6772016143)

**Currently charting:** #34 Top Free · Racing, #50 Top Grossing · Racing, #149 Top Free · Simulation (US App Store)

Explore the physics of piston engines by building, tuning, and testing them. Simulate combustion and rigid body motion in real-time. Compete with others on a global leaderboard by posting your creations.

**Highlights:** Physics-based engine simulation, Build engines from scratch, Tune fuel and ignition maps, Real-time power and torque readings, 3D engine visualization, Global leaderboard

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime | $8.99 | one-time |


### Model Engine Builder

[App page](https://appshunter.io/ios/app/model-engine-builder/id6803801661)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| removeads | $1.99 | one-time |


## Frequently asked questions

### Is Engine Simulator free?

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

### Is Model Engine Builder free?

Model Engine Builder is free to download, with in-app purchases available.

### Do Engine Simulator or Model Engine Builder have ads?

Model Engine Builder shows ads; Engine Simulator does not.

### Which is updated more often, Engine Simulator or Model Engine Builder?

Engine Simulator ships an update every 2 months, and Model Engine Builder every 2 weeks. Most recently, Engine Simulator was updated on October 6, 2026 and Model Engine Builder on October 4, 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.*