# U8 vs Diskio

The clearest difference is price: U8 at Free against Diskio's $5.99. U8 also leads on review sentiment (64% vs 44%) and device support (3 vs 1). Diskio's advantage is in-app purchases (none vs 1) and update cadence (weekly vs every 6 weeks). On rating, ratings volume and ads there is nothing between them.

U8 is free to download; Diskio costs $5.99 up front. U8 sells 1 one-off in-app purchase. Diskio asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.0 for U8 against 3.9 for Diskio. Both are backed by a comparable volume of ratings — 9 and 17 respectively. Written reviews are what separate them: 64% of U8's written reviews are positive against 44% of Diskio's.

U8 ships an update every 6 weeks, Diskio weekly. The most recent releases landed on September 17, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | U8 | Diskio |
| --- | --- | --- |
| Price | **Free** | $5.99 |
| Rating | **[4.0 (9 ratings)](https://appshunter.io/ios/app/u8-disk/id1554732742/reviews)** | [3.9 (17 ratings)](https://appshunter.io/ios/app/diskio-disk-and-ssd-speed-test/id6467768299/reviews) |
| Number of ratings | 9 | **17** |
| Positive reviews | **64.3% of reviews** | 44.4% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Every 6 weeks | **Weekly** |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 26 MB | 10 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [ErxiangHeyi Information](https://appshunter.io/developer/1735695526) | [Sergii Khliustin](https://appshunter.io/developer/1598605990) |

## 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 |


### Diskio

[App page](https://appshunter.io/ios/app/diskio-disk-and-ssd-speed-test/id6467768299)

This utility app provides precise speed tests for all your storage devices, from internal iPhone storage to external USB drives. Customize test parameters for detailed insights and identify performance bottlenecks. It offers a simple three-step process to analyze your storage's true capabilities.

**Highlights:** Precise disk speed testing, Tests internal and external storage, Customizable test parameters, Simple three-step process, Universally compatible with iOS devices, Identifies performance bottlenecks

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

**In-app purchases:** none


## Frequently asked questions

### Is U8 free?

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

### Is Diskio free?

Diskio costs $5.99, with no in-app purchases.

### Which has better reviews, U8 or Diskio?

U8 is rated higher. U8 averages 4.0 out of 5 from 9 ratings, while Diskio averages 3.9 from 17 ratings.

### Do U8 or Diskio have ads?

Both U8 and Diskio show ads.

### Which is updated more often, U8 or Diskio?

U8 ships an update every 6 weeks, and Diskio weekly. Most recently, U8 was updated on September 17, 2026 and Diskio on September 29, 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.*