# 知識ング!! vs PenDrop

The clearest difference is device support: PenDrop at 2 against 知識ング!!'s —. 知識ング!!'s advantage is iOS requirement (11.0 vs 17.0). 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 | 知識ング!! | PenDrop |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | — | No |
| Update frequency | — | Every 5 days |
| Size | 71 MB | 46 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | — | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [HIKARU UEDA](https://appshunter.io/developer/1617407962) | [AKIO FURUTSUKA](https://appshunter.io/developer/1869216839) |

## What reviewers say

### 知識ング!!

[App page](https://appshunter.io/ios/app/id6504483121)

**In-app purchases:** none


### PenDrop

[App page](https://appshunter.io/ios/app/pendrop/id6757839057)

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

**In-app purchases:** none


## Frequently asked questions

### Is 知識ング!! free?

知識ング!! is free to download, with no in-app purchases.

### Is PenDrop free?

PenDrop 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.*