# 极调研 vs 投研通

The clearest difference is device support: 极调研 at 2 against 投研通's —. On price, in-app purchases and iOS requirement 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 | 极调研 | 投研通 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | — |
| Update frequency | Every 4 days | — |
| Size | 128 MB | 49 MB |
| Requires iOS | **13.0** | 14 |
| Devices | **iPhone, iPod** | — |
| Age rating | 4+ | 17+ |
| Developer | [SHENZHEN GURU CLUB INFORMATION TECHNOLOGY CO.,LTD.](https://appshunter.io/developer/1093748365) | [Beijing HYBY Information technology Co., Ltd.](https://appshunter.io/developer/451151960) |

## What reviewers say

### 极调研

[App page](https://appshunter.io/ios/app/id1611323604)

**Features:** Vision Pro support

**In-app purchases:** none


### 投研通

[App page](https://appshunter.io/ios/app/id6474162619)

**In-app purchases:** none


## Frequently asked questions

### Is 极调研 free?

极调研 is free to download, with no in-app purchases.

### Is 投研通 free?

投研通 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.*