# KD DFU vs 固件OTA

The clearest difference is update cadence: 固件OTA at weekly against KD DFU's every 2 months. 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.

KD DFU ships an update every 2 months, 固件OTA weekly. The most recent releases landed on October 27, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | KD DFU | 固件OTA |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Size | 26 MB | 98 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Guangzhou Kuodao Internet of Things Technology Co., Ltd.](https://appshunter.io/developer/1196125665) | [Shanghai AsZen Information Technology Co.,Ltd.](https://appshunter.io/developer/1250311881) |

## What reviewers say

### KD DFU

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

**Features:** macOS Compatibility

**In-app purchases:** none


### 固件OTA

[App page](https://appshunter.io/ios/app/ota/id1602339602)

**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 固件OTA free?

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

### Do KD DFU or 固件OTA have ads?

Neither KD DFU nor 固件OTA shows ads.

### Which is updated more often, KD DFU or 固件OTA?

KD DFU ships an update every 2 months, and 固件OTA weekly. Most recently, KD DFU was updated on October 27, 2026 and 固件OTA on October 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.*