# U8 vs Backup Disk

The clearest difference is ads: Backup Disk at none against U8's shown. U8's advantage is update cadence (every 6 weeks vs every 5 months) and iOS requirement (12.0 vs 14.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. U8 sells 1 one-off in-app purchase and Backup Disk sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

U8 ships an update every 6 weeks, Backup Disk every 5 months. The most recent releases landed on September 17, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | U8 | Backup Disk |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (9 ratings)](https://appshunter.io/ios/app/u8-disk/id1554732742/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | 64.3% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 6 weeks** | Every 5 months |
| Monetization | Free with in-app purchases | — |
| Size | 26 MB | 7 MB |
| Requires iOS | **12.0** | 14.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [ErxiangHeyi Information](https://appshunter.io/developer/1735695526) | [Muharrem Ozkan](https://appshunter.io/developer/443806426) |

## What reviewers say

### 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 |


### Backup Disk

[App page](https://appshunter.io/ios/app/backup-disk/id6444174393)

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Backup Disk PRO Monthly | $2.99 | per month |
| Backup Disk PRO Annual | $9.99 | per year |
| Backup Disk PRO Lifetime | $19.99 | one-time |


## Frequently asked questions

### Is U8 free?

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

### Is Backup Disk free?

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

### Do U8 or Backup Disk have ads?

U8 shows ads; Backup Disk does not.

### Which is updated more often, U8 or Backup Disk?

U8 ships an update every 6 weeks, and Backup Disk every 5 months. Most recently, U8 was updated on September 17, 2026 and Backup Disk on September 9, 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.*