# SD vs WS ETag

The clearest difference is update cadence: WS ETag at every 3 weeks against SD's every 2 months. SD's advantage is iOS requirement (13.0 vs 15.6). 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.

SD ships an update every 2 months, WS ETag every 3 weeks. The most recent releases landed on October 25, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | SD | WS ETag |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Size | 50 MB | 1 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Applied Concepts Incorporated](https://appshunter.io/developer/1439604257) | [伟标 杨](https://appshunter.io/developer/1163606756) |

## What reviewers say

### SD

[App page](https://appshunter.io/ios/app/sddevice-manager/id6742332426)

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

**In-app purchases:** none


### WS ETag

[App page](https://appshunter.io/ios/app/ws-etag/id6796728687)

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

**In-app purchases:** none


## Frequently asked questions

### Is SD free?

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

### Is WS ETag free?

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

### Do SD or WS ETag have ads?

Neither SD nor WS ETag shows ads.

### Which is updated more often, SD or WS ETag?

SD ships an update every 2 months, and WS ETag every 3 weeks. Most recently, SD was updated on October 25, 2026 and WS ETag on October 29, 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.*