# Smart HDD vs 数据同步助手

The clearest difference is iOS requirement: Smart HDD at 8.0 against 数据同步助手's 17.5. On price, update cadence, ads 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.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 26, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Smart HDD | 数据同步助手 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Size | 126 MB | 4 MB |
| Requires iOS | **8.0** | 17.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [汉福 陈](https://appshunter.io/developer/1636423746) | [深圳市云图数字科技有限公司](https://appshunter.io/developer/1485545970) |

## What reviewers say

### Smart HDD

[App page](https://appshunter.io/ios/app/smart-hdd/id980186807)

**Features:** macOS Compatibility

**In-app purchases:** none


### 数据同步助手

[App page](https://appshunter.io/ios/app/id6759816841)

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

**In-app purchases:** none


## Frequently asked questions

### Is Smart HDD free?

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

### Is 数据同步助手 free?

数据同步助手 is free to download, with no in-app purchases.

### Do Smart HDD or 数据同步助手 have ads?

Neither Smart HDD nor 数据同步助手 shows ads.

### Which is updated more often, Smart HDD or 数据同步助手?

Smart HDD ships an update every 2 months, and 数据同步助手 every 2 months. Most recently, Smart HDD was updated on October 26, 2026 and 数据同步助手 on October 25, 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.*