Comfort on timing, not the thermostat.
Thresho tells you the right moment to open or close your windows, so your home stays comfortable without reaching for the thermostat. When the air quality is poor, it holds the open-windows alert. iPhone, US, free beta.
Open this on your iPhone. The link opens TestFlight to install the beta; on a computer it shows Apple's join page.
iPhone · iOS 17 or later · US only · free beta
How to join
Install TestFlight
Install TestFlight, free, from the App Store.
Open the beta link
On your iPhone, tap Join the beta above.
Accept and install
Tap Accept, then Install.
Set up Thresho
Open Thresho, grant location and notifications, and set your home.
One glance should tell you what to do, open, close, or wait. Alerts should arrive a little before the change. Act on them and tell us what works.
One open alert and one close alert stay switched on. The pair is what timing means: watching one edge tells you when to open and never when to close.
When an alert arrives, press and hold it to reveal Opened and Closed.
Forecasts can be wrong, delayed, or unavailable. Always check real conditions and use your own judgment. Do not rely on Thresho for health, safety, or emergency decisions.