AireCat vs Biow
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
AireCat
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This is the official application on air quality of the Generalitat de Catalunya. Download it and you can: - Know the quality of the air whenever and wherever you want. - Check the air quality forecast for today and the next few days. - View the map with the measurement stations of the Air Quality Surveillance and Forecast Network of Catalonia. - Receive notifications about the activation of pollution episodes with the information that interests you, filtering by area and by pollutant. The application is available in English, Catalan and Spanish.
Biow
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.
- Cellular rest and oxygenation
- Air nanofiltration
- Respiratory sweep treatment
- Eliminates allergens and toxins
- Reduces snoring and apneas
- Improves circulation
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Unidad de descanso y oxigenación celular con nanofiltrado de amplio espectro y barrido respiratorio. Mejora tu capacidad respiratoria, Biow trabaja mientras duermes realizando un tratamiento detox 360º del aire que respiras eliminando: Alérgenos, toxinas, gases, material particulado PM, Formadehídos, Nanopartículas, Compuestos orgánico volátiles, Virus y Bacterias. La eliminación de tóxicos es clave para tu circulación, ayuda a tu sistema circulatorio a evitar el envejecimiento. Razones para descubrir Biow: Sueño más profundo y reparador, reduce ronquidos y apneas, mejora el sistema respiratorio, menos bolsas y ojeras, menos papada, protege el sistema circulatorio.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | AireCat | Biow |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (1 ratings) — better |
| Positive reviews | — | 33.3% of reviews |
| Number of ratings | — | 1 — better |
| Update frequency | Every 8 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | — | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 13.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 13 MB | 64 MB |
| Age rating | 4+ | 4+ |
| Developer | Generalitat de Catalunya | Data Monitoring |
In-app purchases
AireCat
No in-app purchases
Biow
No in-app purchases
