# USB Sharp vs 压缩专家

The clearest difference is rating: 压缩专家 at 4.2 against USB Sharp's 3.1. 压缩专家 also leads on in-app purchases (none vs 6) and review sentiment (63% vs 53%). USB Sharp's advantage is update cadence (every 3 weeks vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. USB Sharp sells 6 one-off in-app purchases. 压缩专家 asks for nothing beyond the download.

压缩专家 holds the better App Store score, 4.2 against 3.1. Both are backed by a comparable volume of ratings — 18 and 76 respectively. Written reviews point the same way: 53% of USB Sharp's written reviews are positive against 63% of 压缩专家's.

USB Sharp ships an update every 3 weeks, 压缩专家 every 2 months. The most recent releases landed on September 21, 2026 and August 17, 2026 respectively.

## The numbers

| Metric | USB Sharp | 压缩专家 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.1 (18 ratings)](https://appshunter.io/ios/app/usb-sharp/id427762463/reviews) | **[4.2 (76 ratings)](https://appshunter.io/ios/app/id1482479741/reviews)** |
| Number of ratings | 18 | **76** |
| Positive reviews | 53.2% of reviews | **62.5% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Every 3 weeks** | Every 2 months |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 55 MB | 98 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) | [岚 赵](https://appshunter.io/developer/1352261434) |

## 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 |


### 压缩专家

[App page](https://appshunter.io/ios/app/id1482479741)

This tool efficiently compresses various file types including documents, videos, audio, and images. It helps optimize phone storage by cleaning up duplicate photos and unnecessary data, making file transfer and sharing easier.

**Highlights:** Full-format file compression, Quick packaging and sharing, Intelligent photo album optimization, Deep phone storage cleanup, Supports documents, videos, audio, images, PDFs, GIFs

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

**In-app purchases:** none


## Frequently asked questions

### Is USB Sharp free?

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

### Is 压缩专家 free?

压缩专家 is free to download, with no in-app purchases.

### Which has better reviews, USB Sharp or 压缩专家?

压缩专家 is rated higher. USB Sharp averages 3.1 out of 5 from 18 ratings, while 压缩专家 averages 4.2 from 76 ratings.

### Do USB Sharp or 压缩专家 have ads?

Both USB Sharp and 压缩专家 show ads.

### Which is updated more often, USB Sharp or 压缩专家?

USB Sharp ships an update every 3 weeks, and 压缩专家 every 2 months. Most recently, USB Sharp was updated on September 21, 2026 and 压缩专家 on August 17, 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.*