# Engine Sim vs Model Engine Builder

The clearest difference is chart position: Engine Sim at #99 against Model Engine Builder's unranked. Engine Sim also leads on update cadence (every 3 days vs weekly). Model Engine Builder's advantage is iOS requirement (15.6 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Engine Sim sells 10 one-off in-app purchases and Model Engine Builder sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Engine Sim ships an update every 3 days, Model Engine Builder weekly. The most recent releases landed on November 5, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Engine Sim | Model Engine Builder |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (1.2K ratings)](https://appshunter.io/ios/app/engine-sim-sound-simulator/id6787443044/reviews)** | — |
| Number of ratings | **1.2K** | — |
| Positive reviews | 82.6% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | **Every 3 days** | Weekly |
| Monetization | Free with in-app purchases | — |
| Best chart rank | **#99** | — |
| Size | 44 MB | 20 MB |
| Requires iOS | 18.0 | **15.6** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Sena Takasawa](https://appshunter.io/developer/1887478690) | [MIN GYu OH](https://appshunter.io/developer/6803589847) |

## What reviewers say

### Engine Sim

[App page](https://appshunter.io/ios/app/engine-sim-sound-simulator/id6787443044)

**Currently charting:** #99 Top Free · Racing, #147 Top Grossing · Racing (US App Store)

Experience realistic engine sounds with interactive controls. Explore a variety of engines, from kei cars to V12s, and feel the vibrations. Practice gear shifting and rev-matching for an immersive automotive simulation.

**Highlights:** 10 realistic engine sounds, Interactive throttle control, Live engine sound generation, Straight-pipe mode, Haptic feedback, H-pattern shifter and paddles, Rev-matching practice

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Starter Pack | $1.99 | one-time |
| Big Radiator | $1.99 | one-time |
| Over-Rev Kit | $1.99 | one-time |
| Today's Engine (I6/V8) | $1.99 | one-time |
| Big Bore Kit | $2.99 | one-time |
| Custom Gearbox | $3.99 | one-time |
| Today's Engine (V10/V12) | $4.99 | one-time |
| W16 Hypercar | $9.99 | one-time |
| Pro Parts Pack | $9.99 | one-time |
| Unlock Everything | $49.99 | 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 Sim free?

Engine Sim 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 Sim or Model Engine Builder have ads?

Both Engine Sim and Model Engine Builder show ads.

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

Engine Sim ships an update every 3 days, and Model Engine Builder weekly. Most recently, Engine Sim was updated on November 5, 2026 and Model Engine Builder on November 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.*