# Smart Oud vs Engine Sim

The clearest difference is rating: Engine Sim at 4.7 against Smart Oud's 4.1. Engine Sim also leads on update cadence (every 3 days vs every 10 months) and chart position (#68 vs unranked). Smart Oud's advantage is in-app purchases (none vs 10) and device support (3 vs 1). On price, review sentiment, ratings volume and ads there is nothing between them.

Both are free to download. Engine Sim sells 10 one-off in-app purchases. Smart Oud asks for nothing beyond the download.

Engine Sim holds the better App Store score, 4.7 against 4.1. Both are backed by a comparable volume of ratings — 207 and 73 respectively. Written reviews point the same way: 80% of Smart Oud's written reviews are positive against 86% of Engine Sim's.

Smart Oud ships an update every 10 months, Engine Sim every 3 days. The most recent releases landed on October 7, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Smart Oud | Engine Sim |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (207 ratings)](https://appshunter.io/ios/app/smart-oud/id1529505152/reviews) | **[4.7 (73 ratings)](https://appshunter.io/ios/app/engine-sim-sound-simulator/id6787443044/reviews)** |
| Number of ratings | **207** | 73 |
| Positive reviews | 80.0% of reviews | **85.7% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 10 months | **Every 3 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | — | **#68** |
| Size | 26 MB | 43 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Hossam Afify](https://appshunter.io/developer/1753076954) | [Sena Takasawa](https://appshunter.io/developer/1887478690) |

## What reviewers say

### Smart Oud

[App page](https://appshunter.io/ios/app/smart-oud/id1529505152)

Experience the authentic sound of the East with this virtual lute instrument. Learn to play traditional melodies and create new musical concepts. Share your compositions easily on social media.

**Highlights:** Authentic lute sound, Create and share tunes, Scales and notes, Piano with oud sounds, File manager

**Features:** macOS Compatibility

**In-app purchases:** none


### Engine Sim

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

**Currently charting:** #68 Top Free · Entertainment (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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Quick Shifter | $1.99 | one-time |
| Big Radiator | $1.99 | one-time |
| Over-Rev Kit | $1.99 | one-time |
| Single 450 Moto | $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 |
| Straight Pipe | $5.99 | one-time |
| Pro Parts Pack | $9.99 | one-time |


## Frequently asked questions

### Is Smart Oud free?

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

### Is Engine Sim free?

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

### Which has better reviews, Smart Oud or Engine Sim?

Engine Sim is rated higher. Smart Oud averages 4.1 out of 5 from 207 ratings, while Engine Sim averages 4.7 from 73 ratings.

### Do Smart Oud or Engine Sim have ads?

Both Smart Oud and Engine Sim show ads.

### Which is updated more often, Smart Oud or Engine Sim?

Smart Oud ships an update every 10 months, and Engine Sim every 3 days. Most recently, Smart Oud was updated on October 7, 2026 and Engine Sim on October 15, 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.*