# i vs U8

The clearest difference is review sentiment: U8 at 64% against i's 15%. U8 also leads on rating (4.0 vs 2.8). i's advantage is in-app purchases (none vs 1) and ads (none vs shown). On price, ratings volume, update cadence and device support there is nothing between them.

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

U8 holds the better App Store score, 4.0 against 2.8. Both are backed by a comparable volume of ratings — 23 and 9 respectively. Written reviews point the same way: 15% of i's written reviews are positive against 64% of U8's.

i ships an update every 5 weeks, U8 every 6 weeks. The most recent releases landed on September 20, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | i | U8 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.8 (23 ratings)](https://appshunter.io/ios/app/i-memory/id990930381/reviews) | **[4.0 (9 ratings)](https://appshunter.io/ios/app/u8-disk/id1554732742/reviews)** |
| Number of ratings | **23** | 9 |
| Positive reviews | 15.4% of reviews | **64.3% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 5 weeks** | Every 6 weeks |
| Monetization | **Free** | Free with in-app purchases |
| Size | 72 MB | 26 MB |
| Requires iOS | **10.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ADATA Technology Co., Ltd.](https://appshunter.io/developer/556243725) | [ErxiangHeyi Information](https://appshunter.io/developer/1735695526) |

## What reviewers say

### i

[App page](https://appshunter.io/ios/app/i-memory/id990930381)

Expand your iPhone and iPad storage with a portable drive that offers universal content access. Transfer files, back up your camera roll, and manage media with ease, even without an internet connection. Supports a wide range of formats and offers robust security features.

**Highlights:** Bi-directional Lightning and USB connector, Universal content access and portability, Comprehensive media format support, Camera Roll and Contacts backup, File encryption, Direct saving to flash drive, UHD 4K video recording

**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 i free?

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

### Is U8 free?

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

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

U8 is rated higher. i averages 2.8 out of 5 from 23 ratings, while U8 averages 4.0 from 9 ratings.

### Do i or U8 have ads?

U8 shows ads; i does not.

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

i ships an update every 5 weeks, and U8 every 6 weeks. Most recently, i was updated on September 20, 2026 and U8 on September 17, 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.*