Monitor CO2, temperature, and humidity levels in real-time using a Bluetooth sensor. Save readings with location data and sync them across Apple devices via iCloud. View historical data on a map.






249+ iOS apps curated and reviewed
The best fernaura airsense apps on iPhone average 3.6★ across 249+ titles — we've ranked them by what real users actually keep on their phones. Updated October 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 | Free | — | — | No | Sep 2026 | ||
| 2 | Free | 3.4★ (7) | No | No | Oct 2026 | ||
| 3 | Free | 5.0★ (2) | No | No | Jun 2026 | ||
| 4 | Free | 1.0★ (1) | No | No | May 2026 | ||
| 5 | Free | 4.7★ (6.1K) | Yes | Yes | Oct 2026 | ||
| 6 | Free | — | No | No | Jun 2026 | ||
| 7 | Free | — | No | No | May 2026 | ||
| 8 | Free | — | No | No | May 2026 |












Monitor CO2, temperature, and humidity levels in real-time using a Bluetooth sensor. Save readings with location data and sync them across Apple devices via iCloud. View historical data on a map.


Contribute to a citizen science project by collecting indoor CO2 concentration data in public buildings. Use a supported CO2 sensor and this application to build a comprehensive dataset for analysis.