# Quantum Bob vs Systems Thinking Daily

The clearest difference is price: Quantum Bob at Free against Systems Thinking Daily's $0.99. Systems Thinking Daily's advantage is iOS requirement (15.1 vs 26.2). On ads, in-app purchases and device support there is nothing between them.

Quantum Bob is free to download; Systems Thinking Daily costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Quantum Bob | Systems Thinking Daily |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/quantum-bob/id6759178420/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 days | — |
| Monetization | Free | — |
| Size | 13 MB | 22 MB |
| Requires iOS | 26.2 | **15.1** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [SquatchCraft LLC](https://appshunter.io/developer/1440325922) | [JollofCreative LLC](https://appshunter.io/developer/1888948457) |

## What reviewers say

### Quantum Bob

[App page](https://appshunter.io/ios/app/quantum-bob/id6759178420)

Engage with real quantum physics experiments by predicting measurement outcomes from actual quantum computer data. Compete against an AI leveraging quantum entanglement and discover the quantum advantage through interactive gameplay and lessons.

**Highlights:** Real quantum measurement data, Compete against quantum AI, Local multiplayer, Interactive lessons, Progress tracking, Statistical proof tests

**Features:** macOS Compatibility

**In-app purchases:** none


### Systems Thinking Daily

[App page](https://appshunter.io/ios/app/systems-thinking-daily/id6761329640)

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

**In-app purchases:** none


## Frequently asked questions

### Is Quantum Bob free?

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

### Is Systems Thinking Daily free?

Systems Thinking Daily costs $0.99, with no in-app purchases.

### Do Quantum Bob or Systems Thinking Daily have ads?

Neither Quantum Bob nor Systems Thinking Daily shows ads.

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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.*