# SmartSub vs Engine Simulator 3D

The clearest difference is ads: SmartSub at none against Engine Simulator 3D's shown. SmartSub also leads on device support (3 vs 1) and iOS requirement (8.0 vs 17.0). Engine Simulator 3D's advantage is update cadence (daily vs monthly). On price and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

SmartSub ships an update monthly, Engine Simulator 3D daily. The most recent releases landed on October 19, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | SmartSub | Engine Simulator 3D |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (33 ratings)](https://appshunter.io/ios/app/engine-simulator-3d/id6814764131/reviews)** |
| Number of ratings | — | **33** |
| Positive reviews | — | 83.9% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Daily** |
| Monetization | — | Ad-supported |
| Size | 36 MB | 12 MB |
| Requires iOS | **8.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Formosa Audiomate](https://appshunter.io/developer/989721407) | [Groundcode](https://appshunter.io/developer/1835580242) |

## What reviewers say

### SmartSub

[App page](https://appshunter.io/ios/app/smartsub/id1670310688)

**Features:** macOS Compatibility

**In-app purchases:** none


### Engine Simulator 3D

[App page](https://appshunter.io/ios/app/engine-simulator-3d/id6814764131)

Explore and interact with six detailed 3D engine models, from inline-4 to V12. Experience realistic engine sounds generated in real-time and test different gearboxes, exhaust settings, and tuning options.

**Highlights:** Six detailed 3D engine models, Real-time audio generation, Multiple gearbox options, Customizable exhaust and tuning, Interactive engine inspection, Multi-language interface

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

**In-app purchases:** none


## Frequently asked questions

### Is SmartSub free?

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

### Is Engine Simulator 3D free?

Engine Simulator 3D is free to download, with no in-app purchases.

### Do SmartSub or Engine Simulator 3D have ads?

Engine Simulator 3D shows ads; SmartSub does not.

### Which is updated more often, SmartSub or Engine Simulator 3D?

SmartSub ships an update monthly, and Engine Simulator 3D daily. Most recently, SmartSub was updated on October 19, 2026 and Engine Simulator 3D on October 23, 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.*