# KD DFU vs VST103Setting

The clearest difference is iOS requirement: KD DFU at 12.0 against VST103Setting's 14.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

KD DFU ships an update every 2 months, VST103Setting every 5 weeks. The most recent releases landed on October 12, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | KD DFU | VST103Setting |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Size | 26 MB | 5 MB |
| Requires iOS | **12.0** | 14.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Guangzhou Kuodao Internet of Things Technology Co., Ltd.](https://appshunter.io/developer/1196125665) | [VITALSIGNS TECHNOLOGY CO., LTD.](https://appshunter.io/developer/1394370436) |

## What reviewers say

### KD DFU

[App page](https://appshunter.io/ios/app/kd-dfu/id1571856283)

**Features:** macOS Compatibility

**In-app purchases:** none


### VST103Setting

[App page](https://appshunter.io/ios/app/vst103setting/id1663627304)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is KD DFU free?

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

### Is VST103Setting free?

VST103Setting is free to download, with no in-app purchases.

### Do KD DFU or VST103Setting have ads?

Neither KD DFU nor VST103Setting shows ads.

### Which is updated more often, KD DFU or VST103Setting?

KD DFU ships an update every 2 months, and VST103Setting every 5 weeks. Most recently, KD DFU was updated on October 12, 2026 and VST103Setting on October 6, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*