# 青年階梯 vs WHOSiFY

The clearest difference is device support: WHOSiFY at 2 against 青年階梯's —. 青年階梯's advantage is iOS requirement (13.0 vs 15.6). 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 | 青年階梯 | WHOSiFY |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | — | No |
| Update frequency | — | Monthly |
| Size | 42 MB | 73 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | — | **iPhone, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [連心科技](https://appshunter.io/developer/1646393026) | [WHOSiFY](https://appshunter.io/developer/1801685327) |

## What reviewers say

### 青年階梯

[App page](https://appshunter.io/ios/app/id6444148032)

**In-app purchases:** none


### WHOSiFY

[App page](https://appshunter.io/ios/app/whosify/id6744628978)

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

**In-app purchases:** none


## Frequently asked questions

### Is 青年階梯 free?

青年階梯 is free to download, with no in-app purchases.

### Is WHOSiFY free?

WHOSiFY 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.*