# uDisk vs Power Reader

The clearest difference is rating: uDisk at 4.3 against Power Reader's 3.8. uDisk also leads on review sentiment (84% vs 55%) and ratings volume (247 vs 4). Power Reader's advantage is in-app purchases (none vs 1) and iOS requirement (8.0 vs 11.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. uDisk sells 1 one-off in-app purchase. Power Reader asks for nothing beyond the download.

uDisk holds the better App Store score, 4.3 against 3.8. That said, the two scores are not equally well evidenced: uDisk has 247 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 84% of uDisk's written reviews are positive against 55% of Power Reader's.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 23, 2026 and October 22, 2026 respectively.

## The numbers

| Metric | uDisk | Power Reader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (247 ratings)](https://appshunter.io/ios/app/udisk/id532963658/reviews)** | [3.8 (4 ratings)](https://appshunter.io/ios/app/power-reader-document-book-reader/id634735479/reviews) |
| Number of ratings | **247** | 4 |
| Positive reviews | **83.8% of reviews** | 55.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 20 MB | 73 MB |
| Requires iOS | 11.0 | **8.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Shenzhen Brown Bear Technology Co., LTD](https://appshunter.io/developer/480204138) | [ComcSoft Corporation](https://appshunter.io/developer/413971334) |

## What reviewers say

### uDisk

[App page](https://appshunter.io/ios/app/udisk/id532963658)

Transform your iOS device into a portable USB drive. Easily transfer files between your device and computer via Wi-Fi or iTunes. Browse, play, and edit various file types directly on your phone or tablet.

**Highlights:** Use iOS device as USB disk, Wi-Fi file transfer, iTunes File Sharing, Browse various file types, Play music and video, Edit text files, Create directories and sort files

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Version | $3.99 | one-time |

**What reviewers like**

- 👍 Easy to use
- 🚀 Fast transfer
- 👍 Good for organizing files
- 👍 Useful for freeing up phone space
- 👍 Versatile and durable

**What reviewers complain about**

- 🐛 Does not work for some users
- 🐛 App requires download to each device
- 🐛 Cannot rotate screen
- 🐛 Does not work as a standalone flash drive
- 🐛 Limited file transfer capability

**Reported bugs**

- Cannot save files manually
- Material does not always show
- Does not work after initial use
- Cannot rotate screen
- Does not transfer videos from phone

**Requested features**

- App should be pre-loaded on the thumbdrive
- More clarity on app functionality and safety


### Power Reader

[App page](https://appshunter.io/ios/app/power-reader-document-book-reader/id634735479)

This app allows you to view and manage a wide variety of document and eBook formats on your iPhone and iPad. It offers features like bookmarking, customizable reading settings, and cloud storage integration for seamless file access.

**Highlights:** View DOC, EXCEL, PDF, PPT, RTF, HTML, images, videos, and mp3, Read EPUB and TXT eBooks, Bookmark management for eBooks, Customizable reading settings (font, brightness, themes), File Manager with import/export and cloud integration, Download eBooks from websites

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

**In-app purchases:** none


## Frequently asked questions

### Is uDisk free?

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

### Is Power Reader free?

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

### Which has better reviews, uDisk or Power Reader?

uDisk is rated higher. uDisk averages 4.3 out of 5 from 247 ratings, while Power Reader averages 3.8 from 4 ratings.

### Do uDisk or Power Reader have ads?

Neither uDisk nor Power Reader shows ads.

### Which is updated more often, uDisk or Power Reader?

uDisk ships an update every 2 months, and Power Reader every 2 months. Most recently, uDisk was updated on October 23, 2026 and Power Reader on October 22, 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.*