# CleanAirOptima vs Deinze

The clearest difference is update cadence: Deinze at every 2 weeks against CleanAirOptima's every 17 months. CleanAirOptima's advantage is iOS requirement (12.0 vs 15.1). 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.

CleanAirOptima ships an update every 17 months, Deinze every 2 weeks. The most recent releases landed on October 6, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | CleanAirOptima | Deinze |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 17 months | **Every 2 weeks** |
| Size | 194 MB | 74 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Clean Air Optima International B.V.](https://appshunter.io/developer/1597731229) | [Vlaamse overheid](https://appshunter.io/developer/664577169) |

## What reviewers say

### CleanAirOptima

[App page](https://appshunter.io/ios/app/cleanairoptima/id1597731227)

**Features:** macOS Compatibility

**In-app purchases:** none


### Deinze

[App page](https://appshunter.io/ios/app/deinze/id6807742504)

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

**In-app purchases:** none


## Frequently asked questions

### Is CleanAirOptima free?

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

### Is Deinze free?

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

### Do CleanAirOptima or Deinze have ads?

Neither CleanAirOptima nor Deinze shows ads.

### Which is updated more often, CleanAirOptima or Deinze?

CleanAirOptima ships an update every 17 months, and Deinze every 2 weeks. Most recently, CleanAirOptima was updated on October 6, 2026 and Deinze on October 5, 2026.

---

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