# Quantum Quack vs White Mark Room Acoustics

The clearest difference is in-app purchases: Quantum Quack at none against White Mark Room Acoustics's 4. Quantum Quack also leads on iOS requirement (15.0 vs 18.4). White Mark Room Acoustics's advantage is update cadence (every 9 days vs every 3 months). On price, ads and device support there is nothing between them.

Both are free to download. White Mark Room Acoustics sells 4 in-app purchases, starting at $2.99 per month. Quantum Quack asks for nothing beyond the download.

Quantum Quack ships an update every 3 months, White Mark Room Acoustics every 9 days. The most recent releases landed on October 30, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | Quantum Quack | White Mark Room Acoustics |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/quantum-quack/id6630387948/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 9 days** |
| Monetization | Free | — |
| Size | 1 MB | 11 MB |
| Requires iOS | **15.0** | 18.4 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Morgan Facchin](https://appshunter.io/developer/1762455635) | [ANATIDAE LIMITED](https://appshunter.io/developer/1810331324) |

## What reviewers say

### Quantum Quack

[App page](https://appshunter.io/ios/app/quantum-quack/id6630387948)

This app generates decisions from a list of options using quantum random numbers derived from camera light fluctuations. It explores two interpretations of quantum mechanics: Copenhagen, where you escape determinism, and Many-Worlds, where you experience all options simultaneously. Shortcuts are available for common entries like yes/no or directions.

**Highlights:** Quantum random number generation, Decision making from user-defined lists, Copenhagen Interpretation explanation, Many-Worlds Interpretation explanation, Uses phone camera for randomness, Shortcuts for common entries

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

**In-app purchases:** none


### White Mark Room Acoustics

[App page](https://appshunter.io/ios/app/white-mark-room-acoustics/id6744988622)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| White Mark Pro Monthly | $2.99 | per month |
| White Mark Commercial Monthly | $14.99 | per month |
| White Mark Pro Annual | $24.99 | per year |
| White Mark Commercial Annual | $149.99 | per year |


## Frequently asked questions

### Is Quantum Quack free?

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

### Is White Mark Room Acoustics free?

White Mark Room Acoustics is free to download, with in-app purchases available.

### Do Quantum Quack or White Mark Room Acoustics have ads?

Neither Quantum Quack nor White Mark Room Acoustics shows ads.

### Which is updated more often, Quantum Quack or White Mark Room Acoustics?

Quantum Quack ships an update every 3 months, and White Mark Room Acoustics every 9 days. Most recently, Quantum Quack was updated on October 30, 2026 and White Mark Room Acoustics on November 8, 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.*