# Quantum vs SimPosture

The clearest difference is update cadence: Quantum at every 4 days against SimPosture's every 2 months. SimPosture's advantage is iOS requirement (15.0 vs 17.6). On price, ads, in-app purchases and device support there is nothing between them.

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

Quantum ships an update every 4 days, SimPosture every 2 months. Both last shipped on October 31, 2026.

## The numbers

| Metric | Quantum | SimPosture |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 2 months |
| Size | 1 MB | 34 MB |
| Requires iOS | 17.6 | **15.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Celal Can Sagnak](https://appshunter.io/developer/1865753496) | [Tobias Kafer](https://appshunter.io/developer/6802281277) |

## What reviewers say

### Quantum

[App page](https://appshunter.io/ios/app/quantum-cat/id6759192936)

**Features:** macOS Compatibility

**In-app purchases:** none


### SimPosture

[App page](https://appshunter.io/ios/app/simposture/id6802281275)

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

**In-app purchases:** none


## Frequently asked questions

### Is Quantum free?

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

### Is SimPosture free?

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

### Do Quantum or SimPosture have ads?

Neither Quantum nor SimPosture shows ads.

### Which is updated more often, Quantum or SimPosture?

Quantum ships an update every 4 days, and SimPosture every 2 months. Most recently, Quantum was updated on October 31, 2026 and SimPosture on October 31, 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.*