# 99ml 客戶端 vs Billion Pro

The clearest difference is device support: 99ml 客戶端 at 3 against Billion Pro's —. 99ml 客戶端 also leads on iOS requirement (11.0 vs 13.0). 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 | 99ml 客戶端 | Billion Pro |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | — |
| Update frequency | Every 21 months | — |
| Size | 31 MB | 19 MB |
| Requires iOS | **11.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [Linked Heart Technology Limited](https://appshunter.io/developer/1628264367) | [BSurprise Company Limited](https://appshunter.io/developer/949258441) |

## What reviewers say

### 99ml 客戶端

[App page](https://appshunter.io/ios/app/99ml/id1537555985)

**Features:** macOS Compatibility

**In-app purchases:** none


### Billion Pro

[App page](https://appshunter.io/ios/app/billion-pro/id1661912057)

**In-app purchases:** none


## Frequently asked questions

### Is 99ml 客戶端 free?

99ml 客戶端 is free to download, with no in-app purchases.

### Is Billion Pro free?

Billion Pro 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.*