# Engine Performance Booster vs QB Code

The clearest difference is device support: Engine Performance Booster at 2 against QB Code's —. Engine Performance Booster also leads on iOS requirement (10.0 vs 15.0). On price, update cadence 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.

Engine Performance Booster ships an update every 10 months, QB Code every 9 months. The most recent releases landed on September 20, 2026 and May 17, 2026 respectively.

## The numbers

| Metric | Engine Performance Booster | QB Code |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | — |
| Update frequency | Every 10 months | **Every 9 months** |
| Size | 21 MB | 36 MB |
| Requires iOS | **10.0** | 15.0 |
| Devices | **iPhone, iPod** | — |
| Age rating | 4+ | 17+ |
| Developer | [STAR RIVER DIGITAL DESIGN COMPANY LIMITED](https://appshunter.io/developer/993138472) | [zhihao zheng](https://appshunter.io/developer/1713124938) |

## What reviewers say

### Engine Performance Booster

[App page](https://appshunter.io/ios/app/engine-performance-booster/id1619610828)

**Features:** macOS Compatibility

**In-app purchases:** none


### QB Code

[App page](https://appshunter.io/ios/app/qb-code/id6470183234)

**In-app purchases:** none


## Frequently asked questions

### Is Engine Performance Booster free?

Engine Performance Booster is free to download, with no in-app purchases.

### Is QB Code free?

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

### Which is updated more often, Engine Performance Booster or QB Code?

Engine Performance Booster ships an update every 10 months, and QB Code every 9 months. Most recently, Engine Performance Booster was updated on September 20, 2026 and QB Code on May 17, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*