# KZ DIFFUSION vs AIRTEX

The clearest difference is update cadence: KZ DIFFUSION at every 3 months against AIRTEX's every 25 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.

KZ DIFFUSION ships an update every 3 months, AIRTEX every 25 months. The most recent releases landed on September 24, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | KZ DIFFUSION | AIRTEX |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 25 months |
| Size | 65 MB | 65 MB |
| Requires iOS | 11.0 | 11.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [KZ DIFFUSION](https://appshunter.io/developer/1449475948) | [AIRTEX](https://appshunter.io/developer/1569830966) |

## What reviewers say

### KZ DIFFUSION

[App page](https://appshunter.io/ios/app/kz-diffusion/id1090827793)

**Features:** macOS Compatibility

**In-app purchases:** none


### AIRTEX

[App page](https://appshunter.io/ios/app/airtex/id1569830964)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is KZ DIFFUSION free?

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

### Is AIRTEX free?

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

### Do KZ DIFFUSION or AIRTEX have ads?

Neither KZ DIFFUSION nor AIRTEX shows ads.

### Which is updated more often, KZ DIFFUSION or AIRTEX?

KZ DIFFUSION ships an update every 3 months, and AIRTEX every 25 months. Most recently, KZ DIFFUSION was updated on September 24, 2026 and AIRTEX 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.*