# USB Disk SE, File Manager vs Wrist PDF Viewer

The clearest difference is monetization model: USB Disk SE, File Manager at free with in-app purchases against Wrist PDF Viewer's subscription. USB Disk SE, File Manager also leads on ratings volume (856 vs 6) and review sentiment (76% vs 63%). Wrist PDF Viewer's advantage is ads (none vs shown) and update cadence (every 2 weeks vs every 2 months). On price, rating, in-app purchases and device support there is nothing between them.

Both are free to download. USB Disk SE, File Manager sells 4 in-app purchases, starting at $1.99 per 7 days and Wrist PDF Viewer sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.4 for USB Disk SE, File Manager against 4.3 for Wrist PDF Viewer. That said, the two scores are not equally well evidenced: USB Disk SE, File Manager has 856 ratings behind it against 6, so its average is the more settled of the two. Written reviews are what separate them: 76% of USB Disk SE, File Manager's written reviews are positive against 63% of Wrist PDF Viewer's.

USB Disk SE, File Manager ships an update every 2 months, Wrist PDF Viewer every 2 weeks. The most recent releases landed on November 5, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | USB Disk SE, File Manager | Wrist PDF Viewer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (856 ratings)](https://appshunter.io/ios/app/usb-disk-se-file-manager/id370531520/reviews)** | [4.3 (6 ratings)](https://appshunter.io/ios/app/wrist-pdf-viewer/id6739159971/reviews) |
| Number of ratings | **856** | 6 |
| Positive reviews | **76.3% of reviews** | 62.5% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Monetization | **Free with in-app purchases** | Subscription |
| Size | 224 MB | 7 MB |
| Requires iOS | 16.0 | **15.0** |
| Devices | **iPhone, iPad, Apple TV, Apple Watch** | iPhone, iPod, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Imesart S.a.r.l.](https://appshunter.io/developer/290160983) | [Md Aswad Sarkar](https://appshunter.io/developer/1783950489) |

## What reviewers say

### USB Disk SE, File Manager

[App page](https://appshunter.io/ios/app/usb-disk-se-file-manager/id370531520)

This app allows you to store, view, and manage documents on your iPhone and iPad. It offers a built-in viewer, easy file transfers via iTunes, and integration with cloud storage services. Enjoy a simple interface with powerful features for organizing and accessing your files.

**Highlights:** Cloud storage integration (Dropbox, Google Drive, OneDrive, Box), Store and view files on iPhone/iPod, Intuitive swipe navigation, File preview with thumbnails, Copy, paste, cut, delete, and create files, Email documents, USB file transfers

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| USB Disk Pro Weekly | $1.99 | per 7 days |
| USB Disk Pro Monthly | $4.99 | per month |
| USB Disk Pro Half Yearly | $19.99 | per 6 months |
| USB Disk Pro Yearly | $39.99 | per year |

**What reviewers like**

- 💾 Easy file storage and access
- 📁 Convenient document management
- 🔍 Supports various file formats
- ⚙️ Useful for transferring files between devices

**What reviewers complain about**

- 🐛 Crashes and freezes reported
- 🔒 Limited file access and editing capabilities
- 💰 Paywall for some features
- 🔍 Difficulty organizing files

**Reported bugs**

- Crashes when opening certain file types
- Syncing issues with iTunes
- Compatibility problems with newer iOS versions

**Requested features**

- Ability to edit documents within the app
- Improved file management with folders and renaming
- Support for more file types
- Wireless file transfer without iTunes


### Wrist PDF Viewer

[App page](https://appshunter.io/ios/app/wrist-pdf-viewer/id6739159971)

View and manage PDF files directly on your Apple Watch and iPhone. Features include double-tap zooming, crown navigation, and search functionality. Sync documents seamlessly via iCloud with a premium subscription.

**Highlights:** View PDFs on Apple Watch, Sync PDFs via iCloud, Double-tap zooming, Digital Crown navigation, Search within PDFs, Large file support

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Wrist PDF Viewer Premium | $2.99 | per month |
| Wrist PDF Viewer Premium | $17.99 | per year |


## Frequently asked questions

### Is USB Disk SE, File Manager free?

USB Disk SE, File Manager is free to download, with in-app purchases available.

### Is Wrist PDF Viewer free?

Wrist PDF Viewer is free to download, with in-app purchases available.

### Which has better reviews, USB Disk SE, File Manager or Wrist PDF Viewer?

USB Disk SE, File Manager is rated higher. USB Disk SE, File Manager averages 4.4 out of 5 from 856 ratings, while Wrist PDF Viewer averages 4.3 from 6 ratings.

### Do USB Disk SE, File Manager or Wrist PDF Viewer have ads?

USB Disk SE, File Manager shows ads; Wrist PDF Viewer does not.

### Which is updated more often, USB Disk SE, File Manager or Wrist PDF Viewer?

USB Disk SE, File Manager ships an update every 2 months, and Wrist PDF Viewer every 2 weeks. Most recently, USB Disk SE, File Manager was updated on November 5, 2026 and Wrist PDF Viewer on November 4, 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.*