# 量子探险 vs 结绳记事

The clearest difference is device support: 结绳记事 at 2 against 量子探险's —. 量子探险's advantage is iOS requirement (11.0 vs 18.0). 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.

## The numbers

| Metric | 量子探险 | 结绳记事 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | — | No |
| Update frequency | — | Every 2 days |
| Size | 72 MB | 9 MB |
| Requires iOS | **11.0** | 18.0 |
| Devices | — | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [永蓓 程](https://appshunter.io/developer/1724810778) | [Yeqing Wang](https://appshunter.io/developer/1329383029) |

## What reviewers say

### 量子探险

[App page](https://appshunter.io/ios/app/ai/id6475700739)

**In-app purchases:** none


### 结绳记事

[App page](https://appshunter.io/ios/app/id6761259263)

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

**In-app purchases:** none


## Frequently asked questions

### Is 量子探险 free?

量子探险 is free to download, with no in-app purchases.

### Is 结绳记事 free?

结绳记事 is free to download, with no in-app purchases.

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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.*