# Usb Transfer vs TopSIM

The clearest difference is in-app purchases: TopSIM at none against Usb Transfer's 3. Usb Transfer's advantage is iOS requirement (12.0 vs 15.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Usb Transfer sells 3 in-app purchases, starting at $2.99 per month. TopSIM asks for nothing beyond the download.

Usb Transfer ships an update every 3 weeks, TopSIM monthly. The most recent releases landed on September 15, 2026 and August 25, 2026 respectively.

## The numbers

| Metric | Usb Transfer | TopSIM |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Monthly |
| Size | 91 MB | 43 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Changsha Fugui Bamboo Network Technology Co., Ltd.](https://appshunter.io/developer/1458061020) | [TeleFlow](https://appshunter.io/developer/1824141261) |

## What reviewers say

### Usb Transfer

[App page](https://appshunter.io/ios/app/usb-transfer/id6504265361)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 月会员 | $2.99 | per month |
| 季会员 | $3.99 | per 3 months |
| 年会员 | $9.99 | per year |


### TopSIM

[App page](https://appshunter.io/ios/app/topsim/id6748059624)

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

**In-app purchases:** none


## Frequently asked questions

### Is Usb Transfer free?

Usb Transfer is free to download, with in-app purchases available.

### Is TopSIM free?

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

### Do Usb Transfer or TopSIM have ads?

Neither Usb Transfer nor TopSIM shows ads.

### Which is updated more often, Usb Transfer or TopSIM?

Usb Transfer ships an update every 3 weeks, and TopSIM monthly. Most recently, Usb Transfer was updated on September 15, 2026 and TopSIM on August 25, 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.*