# 知虾 vs 普罗德HD

The clearest difference is update cadence: 普罗德HD at every 8 days against 知虾's monthly. 知虾's advantage is device support (3 vs 1). On price, ads, 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.

知虾 ships an update monthly, 普罗德HD every 8 days. The most recent releases landed on November 4, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | 知虾 | 普罗德HD |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 8 days** |
| Size | 39 MB | 78 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [广州萌啦信息科技有限公司](https://appshunter.io/developer/1756891754) | [CRODIGY INTELLIGENT TECHNOLOGY CO., LTD.](https://appshunter.io/developer/1114418723) |

## What reviewers say

### 知虾

[App page](https://appshunter.io/ios/app/id6535681688)

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

**In-app purchases:** none


### 普罗德HD

[App page](https://appshunter.io/ios/app/hd/id6737514367)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 知虾 free?

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

### Is 普罗德HD free?

普罗德HD is free to download, with no in-app purchases.

### Do 知虾 or 普罗德HD have ads?

Neither 知虾 nor 普罗德HD shows ads.

### Which is updated more often, 知虾 or 普罗德HD?

知虾 ships an update monthly, and 普罗德HD every 8 days. Most recently, 知虾 was updated on November 4, 2026 and 普罗德HD on October 30, 2026.

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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.*