U8 vs Diskio
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
U8
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.
- Zero-flow wireless file transfer
- Ultra-fast transmission speeds (up to 30MB/s)
- File backup and management
- Cross-platform compatibility
- Supports various file formats
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Mobile phone USB flash drive-file transfer and backup artifact Zero-flow transmission of any file, does not consume a trillion traffic, does not cost a penny. Mobile phone USB flash drive is a cross-platform, easy to operate, ultra-fast transmission speed of extremely fast file backup tools. You only need to transfer files in the same LAN through a computer browser -Software features- 1 free flow 2 File transfer speed is ultra-fast: kill Bluetooth 100 times, and the fastest speed can reach 30Mb/s. 3 Backup Files: You can browse and manage all formats supported by iOS and photos, videos, music and other files. 4 Cross-platform transmission: iOS mobile phones and other iOS mobile phones, and desktop device platforms, free transmission. 5 Powerful: Transmit photos, videos, music and other files in various formats in the same LAN. The function of mobile phone USB flash drive is small and powerful, which is a rare tool in your daily life. Come and try it quickly! ;
Diskio
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.
- Precise disk speed testing
- Tests internal and external storage
- Customizable test parameters
- Simple three-step process
- Universally compatible with iOS devices
- Identifies performance bottlenecks
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Welcome to Diskio 2.0, the ultimate disk speed testing solution for iOS, now completely redesigned and more powerful than ever. Experience Unmatched Precision: Our advanced algorithms deliver the most accurate speed tests available for all your storage devices. Trust the numbers you see—they reflect true performance. Test Any Storage Device: From your iPhone's internal storage to external drives connected via USB-C or Lightning, Diskio measures them all with laboratory-grade precision. Customized for Power Users: Tailor your tests by adjusting file size and chunk size parameters to match your specific needs. Whether you're a tech enthusiast or IT professional, get the exact insights you require. Simple Three-Step Process: 1. Select your storage location (internal or external) 2. Choose your test parameters 3. Get comprehensive results in seconds Universally Compatible: Works flawlessly with all iOS devices and external storage solutions including USB drives and SD cards. Regularly updated for the latest iOS versions. Why Diskio Matters • Identify performance bottlenecks before they impact your work • Make informed purchases when investing in new storage • Verify you're getting the speed you paid for • Monitor drive health and performance over time Download Diskio today and discover what your storage is truly capable of!
Screenshots
Verdict
The clearest difference is price: U8 at Free against Diskio's $5.99. U8 also leads on review sentiment (64% vs 44%) and iOS requirement (12.0 vs 15.0). Diskio's advantage is in-app purchases (none vs 1) and update cadence (every 5 days vs every 6 weeks). On rating, ratings volume, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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 every 5 days. The most recent releases landed on September 17, 2026 and September 24, 2026 respectively.
| Parameter | U8 | Diskio |
|---|---|---|
| Price | Free — better | $5.99 |
| Rating | 4.0 (9 ratings) — better | 3.9 (17 ratings) |
| Positive reviews | 64.3% of reviews — better | 44.4% of reviews |
| Number of ratings | 9 | 17 — better |
| Update frequency | Every 6 weeks | Every 5 days — better |
| Ads | Yes | Yes |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases — better | Paid |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 12.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 26 MB | 4 MB |
| Age rating | 4+ | 4+ |
| Developer | ErxiangHeyi Information | Sergii Khliustin |
Customer experience
U8
Diskio
In-app purchases
U8
- LifeTime$3.99
Diskio
No in-app purchases









