# USB Sharp Pro vs Qwantum Private Messaging

The clearest difference is price: Qwantum Private Messaging at Free against USB Sharp Pro's $2.99. Qwantum Private Messaging also leads on rating (5.0 vs 4.0). USB Sharp Pro's advantage is ratings volume (12 vs 1). On update cadence, ads, in-app purchases and device support there is nothing between them.

Qwantum Private Messaging is free to download; USB Sharp Pro costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Qwantum Private Messaging holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: USB Sharp Pro has 12 ratings behind it against 1, so its average is the more settled of the two.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on November 1, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | USB Sharp Pro | Qwantum Private Messaging |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | [4.0 (12 ratings)](https://appshunter.io/ios/app/usb-sharp-pro/id436590784/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/qwantum-private-messaging/id6464568252/reviews)** |
| Number of ratings | **12** | 1 |
| Positive reviews | 64.1% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | Paid | **Free** |
| Size | 52 MB | 4 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [锦文 游](https://appshunter.io/developer/406832160) | [MagTek, Inc.](https://appshunter.io/developer/371172200) |

## What reviewers say

### USB Sharp Pro

[App page](https://appshunter.io/ios/app/usb-sharp-pro/id436590784)

Transform your iPhone or iPad into a portable wireless storage disk for efficient file management.  Supports a wide range of file types for viewing, editing, and transferring via Wi-Fi or iTunes.

**Highlights:** Wireless storage disk, File management, Wi-Fi transfer, iTunes file sharing, Document reader, E-book reader, Music player

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

**In-app purchases:** none


### Qwantum Private Messaging

[App page](https://appshunter.io/ios/app/qwantum-private-messaging/id6464568252)

This secure messaging app allows users to encrypt and decrypt sensitive data using physical card readers and tokens for authentication. It fosters a community of professionals valuing privacy and document integrity.

**Highlights:** End-to-end data encryption, Card reader authentication, Token-based login, Secure message creation, Message expiration dates, Audit detail levels

**In-app purchases:** none


## Frequently asked questions

### Is USB Sharp Pro free?

USB Sharp Pro costs $2.99, with no in-app purchases.

### Is Qwantum Private Messaging free?

Qwantum Private Messaging is free to download, with no in-app purchases.

### Which has better reviews, USB Sharp Pro or Qwantum Private Messaging?

Qwantum Private Messaging is rated higher. USB Sharp Pro averages 4.0 out of 5 from 12 ratings, while Qwantum Private Messaging averages 5.0 from 1 ratings.

### Do USB Sharp Pro or Qwantum Private Messaging have ads?

Neither USB Sharp Pro nor Qwantum Private Messaging shows ads.

### Which is updated more often, USB Sharp Pro or Qwantum Private Messaging?

USB Sharp Pro ships an update every 2 months, and Qwantum Private Messaging every 2 months. Most recently, USB Sharp Pro was updated on November 1, 2026 and Qwantum Private Messaging on October 30, 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.*