# 水晶盾 vs Smart Flow T

The clearest difference is update cadence: Smart Flow T at weekly against 水晶盾's every 3 weeks. Smart Flow T also leads on iOS requirement (9.0 vs 14.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

水晶盾 ships an update every 3 weeks, Smart Flow T weekly. The most recent releases landed on July 5, 2026 and September 16, 2026 respectively.

## The numbers

| Metric | 水晶盾 | Smart Flow T |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Weekly** |
| Size | 47 MB | 55 MB |
| Requires iOS | 14.0 | **9.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [M (Nanjing) Digital Techonology Co., Ltd.](https://appshunter.io/developer/1719631787) | [PubLink science and technology (Hangzhou) Co.,Ltd](https://appshunter.io/developer/1531249187) |

## What reviewers say

### 水晶盾

[App page](https://appshunter.io/ios/app/id1504081283)

**Features:** macOS Compatibility

**In-app purchases:** none


### Smart Flow T

[App page](https://appshunter.io/ios/app/smart-flow-t/id1585132892)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 水晶盾 free?

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

### Is Smart Flow T free?

Smart Flow T is free to download, with no in-app purchases.

### Do 水晶盾 or Smart Flow T have ads?

Neither 水晶盾 nor Smart Flow T shows ads.

### Which is updated more often, 水晶盾 or Smart Flow T?

水晶盾 ships an update every 3 weeks, and Smart Flow T weekly. Most recently, 水晶盾 was updated on July 5, 2026 and Smart Flow T on September 16, 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.*