# USB Sharp vs OTG Flash Pro

The clearest difference is in-app purchases: OTG Flash Pro at none against USB Sharp's 6. OTG Flash Pro also leads on ads (none vs shown) and update cadence (every 10 days vs every 3 weeks). On price, device support and iOS requirement there is nothing between them.

Both are free to download. USB Sharp sells 6 one-off in-app purchases. OTG Flash Pro asks for nothing beyond the download.

USB Sharp ships an update every 3 weeks, OTG Flash Pro every 10 days. The most recent releases landed on September 21, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | USB Sharp | OTG Flash Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.1 (18 ratings)](https://appshunter.io/ios/app/usb-sharp/id427762463/reviews)** | — |
| Number of ratings | **18** | — |
| Positive reviews | 53.2% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | **Every 10 days** |
| Monetization | Free with in-app purchases | — |
| Size | 55 MB | 136 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [锦文 游](https://appshunter.io/developer/406832160) | [裕雨 程](https://appshunter.io/developer/1079877476) |

## What reviewers say

### USB Sharp

[App page](https://appshunter.io/ios/app/usb-sharp/id427762463)

Transform your iPhone or iPad into a portable wireless storage disk for efficient file management. Upload multiple files via Chrome and Firefox, extract encrypted RAR archives, and organize documents, photos, and videos with ease.

**Highlights:** Portable wireless storage, File management, Multiple file upload, Encrypted archive extraction, Document reader, Photo viewer, Video player

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads | $0.99 | one-time |
| Music Player | $0.99 | one-time |
| Dropbox | $0.99 | one-time |
| Video Player | $0.99 | one-time |
| SkyDrive | $0.99 | one-time |
| Full Version | $2.99 | one-time |


### OTG Flash Pro

[App page](https://appshunter.io/ios/app/otg-flash-pro/id6752880818)

**In-app purchases:** none


## Frequently asked questions

### Is USB Sharp free?

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

### Is OTG Flash Pro free?

OTG Flash Pro is free to download, with no in-app purchases.

### Do USB Sharp or OTG Flash Pro have ads?

USB Sharp shows ads; OTG Flash Pro does not.

### Which is updated more often, USB Sharp or OTG Flash Pro?

USB Sharp ships an update every 3 weeks, and OTG Flash Pro every 10 days. Most recently, USB Sharp was updated on September 21, 2026 and OTG Flash Pro on September 12, 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.*