# AireCat vs Biow

The clearest difference is update cadence: Biow at every 3 months against AireCat's every 8 months. AireCat's advantage is iOS requirement (13.0 vs 16.0). 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.

AireCat ships an update every 8 months, Biow every 3 months. Both last shipped on October 19, 2026.

## The numbers

| Metric | AireCat | Biow |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/biow/id1472171569/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 33.3% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 3 months** |
| Monetization | — | Free |
| Size | 13 MB | 64 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Generalitat de Catalunya](https://appshunter.io/developer/331752198) | [Data Monitoring](https://appshunter.io/developer/1361669407) |

## What reviewers say

### AireCat

[App page](https://appshunter.io/ios/app/airecat/id877506570)

**Features:** Vision Pro support

**In-app purchases:** none


### Biow

[App page](https://appshunter.io/ios/app/biow/id1472171569)

This app provides a cellular rest and oxygenation unit that purifies the air you breathe during sleep. It eliminates allergens, toxins, viruses, and bacteria, improving respiratory capacity and circulation for better sleep and reduced signs of aging.

**Highlights:** Cellular rest and oxygenation, Air nanofiltration, Respiratory sweep treatment, Eliminates allergens and toxins, Reduces snoring and apneas, Improves circulation

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is AireCat free?

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

### Is Biow free?

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

### Do AireCat or Biow have ads?

Neither AireCat nor Biow shows ads.

### Which is updated more often, AireCat or Biow?

AireCat ships an update every 8 months, and Biow every 3 months. Most recently, AireCat was updated on October 19, 2026 and Biow on October 19, 2026.

---

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