# 因赛气道宝 vs EchoEgg

The clearest difference is device support: EchoEgg at 2 against 因赛气道宝's —. 因赛气道宝's advantage is iOS requirement (12.1 vs 16.0). 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 | 因赛气道宝 | EchoEgg |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | — | No |
| Update frequency | — | Every 2 weeks |
| Size | 17 MB | 120 MB |
| Requires iOS | **12.1** | 16.0 |
| Devices | — | **iPhone, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Shenzhen Yin Sai De Si Medical Technology Co.,Ltd](https://appshunter.io/developer/1457632595) | [Lianou Technology (Haining) Co., Ltd](https://appshunter.io/developer/1775370202) |

## What reviewers say

### 因赛气道宝

[App page](https://appshunter.io/ios/app/id1457632596)

**In-app purchases:** none


### EchoEgg

[App page](https://appshunter.io/ios/app/echoegg/id6741832546)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 因赛气道宝 free?

因赛气道宝 is free to download, with no in-app purchases.

### Is EchoEgg free?

EchoEgg 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.*