Airthings is a free utility application designed for iPhone users that focuses on improving indoor air quality. The app enables users to monitor their air quality through smart devices, facilitating better focus, reducing allergy symptoms, and enhancing sleep quality. Key features include quick device setup, color-coded indicators for immediate air quality assessment, and detailed graphs for tracking trends over time.

In addition to monitoring capabilities, Airthings allows users to control their Renew air purifier remotely and provides a 5-day pollen forecast with actionable advice. Users receive notifications about poor air quality and tips for resolving common issues. The app also offers personalized recommendations for Airthings monitors and the option to subscribe to monthly Air Reports that summarize sensor data for the user's location. Note that this app supports all Airthings products except for the first-generation Wave Radon.