# 睿迪安 vs 赛博知了

The clearest difference is in-app purchases: 睿迪安 at none against 赛博知了's 1. 睿迪安 also leads on iOS requirement (12.0 vs 17.0). 赛博知了's advantage is device support. On price there is nothing between them.

Both are free to download. 赛博知了 sells 1 one-off in-app purchase. 睿迪安 asks for nothing beyond the download.

## The numbers

| Metric | 睿迪安 | 赛博知了 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | — | No |
| Update frequency | — | Every 6 days |
| Size | 50 MB | 9 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | — | **iPhone, iPad** |
| Age rating | 17+ | 4+ |
| Developer | [Zhejiang Ruidi'an New Energy Technology Co., Ltd.](https://appshunter.io/developer/1674089038) | [楠楠 贺](https://appshunter.io/developer/1535384607) |

## What reviewers say

### 睿迪安

[App page](https://appshunter.io/ios/app/id6470202052)

**In-app purchases:** none


### 赛博知了

[App page](https://appshunter.io/ios/app/id6797769291)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 一竿齐开 | $0.99 | one-time |


## Frequently asked questions

### Is 睿迪安 free?

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

### Is 赛博知了 free?

赛博知了 is free to download, with in-app purchases available.

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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.*