# WunderLINQ DFU vs Holyiot

The clearest difference is update cadence: WunderLINQ DFU at every 7 months against Holyiot's every 24 months. WunderLINQ DFU also leads on iOS requirement (9.0 vs 12.0). 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.

WunderLINQ DFU ships an update every 7 months, Holyiot every 24 months. The most recent releases landed on November 2, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | WunderLINQ DFU | Holyiot |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 7 months** | Every 24 months |
| Monetization | Free | — |
| Size | 1 MB | 16 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Black Box Embedded, LLC](https://appshunter.io/developer/1410462733) | [Shenzhen Hong yi yun jia technology Co.,LTD](https://appshunter.io/developer/1188616341) |

## What reviewers say

### WunderLINQ DFU

[App page](https://appshunter.io/ios/app/wunderlinq-dfu/id1441840346)

This utility app delivers Over-The-Air firmware updates for compatible hardware. It ensures your devices are running the latest software for optimal performance and security.

**Highlights:** Over-the-Air firmware updates, WunderLINQ hardware support, Latest software delivery, Performance optimization

**Features:** macOS Compatibility

**In-app purchases:** none


### Holyiot

[App page](https://appshunter.io/ios/app/holyiot-dfu/id6445978221)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is WunderLINQ DFU free?

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

### Is Holyiot free?

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

### Do WunderLINQ DFU or Holyiot have ads?

Neither WunderLINQ DFU nor Holyiot shows ads.

### Which is updated more often, WunderLINQ DFU or Holyiot?

WunderLINQ DFU ships an update every 7 months, and Holyiot every 24 months. Most recently, WunderLINQ DFU was updated on November 2, 2026 and Holyiot on October 7, 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.*