# WiDrawer2 vs SATO Online Services, SOS

The clearest difference is update cadence: WiDrawer2 at every 3 months against SATO Online Services, SOS's every 11 months. WiDrawer2 also leads on iOS requirement (7.0 vs 12). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

WiDrawer2 ships an update every 3 months, SATO Online Services, SOS every 11 months. Both last shipped on November 1, 2026.

## The numbers

| Metric | WiDrawer2 | SATO Online Services, SOS |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 12.1% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 11 months |
| Monetization | Free | — |
| Size | 52 MB | 41 MB |
| Requires iOS | **7.0** | 12 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [RATOC Systems, Inc.](https://appshunter.io/developer/568725272) | [SATO CORPORATION](https://appshunter.io/developer/528168978) |

## What reviewers say

### WiDrawer2

[App page](https://appshunter.io/ios/app/widrawer2/id955370800)

Access and manage files on SD cards and USB flash drives wirelessly from your iOS device. Browse, copy, delete, and stream media content directly from your storage devices. Supports various file types and offers convenient features like slideshows and batch copying.

**Highlights:** Wireless file access, Browse, copy, and delete files, Create and manage folders, Thumbnail display for images, Stream music and videos, Photo slideshows, File search functionality, Batch copy to camera roll

**Features:** macOS Compatibility

**In-app purchases:** none


### SATO Online Services, SOS

[App page](https://appshunter.io/ios/app/sato-online-services-sos/id982943043)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is WiDrawer2 free?

WiDrawer2 is free to download, with no in-app purchases.

### Is SATO Online Services, SOS free?

SATO Online Services, SOS is free to download, with no in-app purchases.

### Do WiDrawer2 or SATO Online Services, SOS have ads?

Neither WiDrawer2 nor SATO Online Services, SOS shows ads.

### Which is updated more often, WiDrawer2 or SATO Online Services, SOS?

WiDrawer2 ships an update every 3 months, and SATO Online Services, SOS every 11 months. Most recently, WiDrawer2 was updated on November 1, 2026 and SATO Online Services, SOS on November 1, 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.*