# Smart HDD vs U8

The clearest difference is in-app purchases: Smart HDD at none against U8's 1. Smart HDD also leads on ads (none vs shown) and iOS requirement (8.0 vs 12.0). On price, update cadence and device support there is nothing between them.

Both are free to download. U8 sells 1 one-off in-app purchase. Smart HDD asks for nothing beyond the download.

Smart HDD ships an update every 2 months, U8 every 6 weeks. The most recent releases landed on October 2, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Smart HDD | U8 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.1 (10 ratings)](https://appshunter.io/ios/app/u8-disk/id1554732742/reviews)** |
| Number of ratings | — | **10** |
| Positive reviews | — | 64.3% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 6 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 126 MB | 26 MB |
| Requires iOS | **8.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [汉福 陈](https://appshunter.io/developer/1636423746) | [ErxiangHeyi Information](https://appshunter.io/developer/1735695526) |

## What reviewers say

### Smart HDD

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

**Features:** macOS Compatibility

**In-app purchases:** none


### U8

[App page](https://appshunter.io/ios/app/u8-disk/id1554732742)

Transfer and back up any file wirelessly between your mobile devices and computers without using mobile data. Experience ultra-fast speeds for seamless file management and sharing across different platforms.

**Highlights:** Zero-flow wireless file transfer, Ultra-fast transmission speeds (up to 30MB/s), File backup and management, Cross-platform compatibility, Supports various file formats

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| LifeTime | $3.99 | one-time |


## Frequently asked questions

### Is Smart HDD free?

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

### Is U8 free?

U8 is free to download, with in-app purchases available.

### Do Smart HDD or U8 have ads?

U8 shows ads; Smart HDD does not.

### Which is updated more often, Smart HDD or U8?

Smart HDD ships an update every 2 months, and U8 every 6 weeks. Most recently, Smart HDD was updated on October 2, 2026 and U8 on October 10, 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.*