# USB Sharp Pro vs Stopwatch Skull

The clearest difference is price: Stopwatch Skull at Free against USB Sharp Pro's $2.99. Stopwatch Skull also leads on update cadence (daily vs every 2 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Stopwatch Skull 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.

USB Sharp Pro ships an update every 2 months, Stopwatch Skull daily. The most recent releases landed on September 29, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | USB Sharp Pro | Stopwatch Skull |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[4.0 (12 ratings)](https://appshunter.io/ios/app/usb-sharp-pro/id436590784/reviews)** | — |
| Number of ratings | **12** | — |
| Positive reviews | 59.6% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Daily** |
| Monetization | Paid | — |
| Size | 52 MB | 40 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [锦文 游](https://appshunter.io/developer/406832160) | [Hasancan Cakicioglu](https://appshunter.io/developer/1798437420) |

## 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


### Stopwatch Skull

[App page](https://appshunter.io/ios/app/stopwatch-skull-timer/id6744737324)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is USB Sharp Pro free?

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

### Is Stopwatch Skull free?

Stopwatch Skull is free to download, with no in-app purchases.

### Do USB Sharp Pro or Stopwatch Skull have ads?

Neither USB Sharp Pro nor Stopwatch Skull shows ads.

### Which is updated more often, USB Sharp Pro or Stopwatch Skull?

USB Sharp Pro ships an update every 2 months, and Stopwatch Skull daily. Most recently, USB Sharp Pro was updated on September 29, 2026 and Stopwatch Skull on September 15, 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.*