# USB Disk vs PdfToWatchReader Pro

The clearest difference is price: PdfToWatchReader Pro at Free against USB Disk's $0.99. PdfToWatchReader Pro also leads on ads (none vs shown). USB Disk's advantage is iOS requirement (12.0 vs 17.0). On in-app purchases and device support there is nothing between them.

PdfToWatchReader Pro is free to download; USB Disk costs $0.99 up front. USB Disk sells 10 in-app purchases, starting at $4.99 per month and PdfToWatchReader Pro sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | USB Disk | PdfToWatchReader Pro |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[4.6 (160 ratings)](https://appshunter.io/ios/app/usb-disk/id385275533/reviews)** | — |
| Number of ratings | **160** | — |
| Positive reviews | 70.8% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | — |
| Monetization | Free with in-app purchases | — |
| Size | 170 MB | 6 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Imesart S.a.r.l.](https://appshunter.io/developer/290160983) | [ZONESOFT S.R.L.](https://appshunter.io/developer/6780032610) |

## What reviewers say

### USB Disk

[App page](https://appshunter.io/ios/app/usb-disk/id385275533)

Manage and view documents on your iPhone or iPad with this intuitive file manager. Access cloud storage, open various file types, and transfer files via iTunes. Advanced features like photo library access and PDF annotation are available via subscription.

**Highlights:** Cloud storage integration (Dropbox, Google Drive, OneDrive, Box), Built-in document viewer for various file types, File transfer via iTunes, Create and open zip files, Swipe navigation and file previews, Email documents and download attachments

**Features:** macOS Compatibility, Family Sharing, Apple Watch app

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| USB Disk Pro Monthly | $4.99 | per month |
| Audio Player + | $0.99 | one-time |
| Zip files support | $0.99 | one-time |
| Dropbox access | $0.99 | one-time |
| Lock code | $0.99 | one-time |
| Text editor | $0.99 | one-time |
| Evernote access | $0.99 | one-time |
| Google Drive access | $0.99 | one-time |
| OneDrive access | $0.99 | one-time |
| WebDAV access | $1.99 | one-time |

**What reviewers like**

- 👍 Easy to use
- 🚀 Efficient file management
- 💡 Useful for storing and accessing documents
- 👍 Convenient for transferring files between devices

**What reviewers complain about**

- 🐛 Crashes and stability issues
- 💰 Expensive paid features
- 🔒 Concerns about security and privacy
- 🤔 Misleading app description

**Reported bugs**

- Inability to open certain file types
- Compatibility issues with newer iOS versions
- Syncing problems between devices

**Requested features**

- Support for more file types
- Improved integration with cloud storage services
- Ability to edit and annotate files
- Better organization and folder management


### PdfToWatchReader Pro

[App page](https://appshunter.io/ios/app/pdftowatchreader-pro/id6780032608)

**Features:** Apple Watch app

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PdfToWatchReaderPro Premium | $0.99 | per month |
| PdfToWatchReaderPro Premium | $9.99 | per year |


## Frequently asked questions

### Is USB Disk free?

USB Disk costs $0.99, and also offers in-app purchases.

### Is PdfToWatchReader Pro free?

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

### Do USB Disk or PdfToWatchReader Pro have ads?

USB Disk shows ads; PdfToWatchReader Pro does not.

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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.*