This app learns your body's ideal sleep temperature and automatically adjusts your smart thermostat throughout the night. It uses data from your wearable to personalize a four-phase temperature schedule for optimal sleep recovery. Requires a compatible smart thermostat and sleep-tracking wearable.
1.7.11
October 4, 2026
- New on Home: a card for nights after drinking. It shows in the evening and overnight, from a few hours before bedtime until the next morning. On any plan, tapping Run tonight notes the night as a night after drinks. - With Premium and a connected thermostat, it can also run a cooler curve for that night only, and tonight's curve on Home shows it. Your normal curve is back the next night. - Before you confirm, it tells you whether your curve will change. You can start it after you're already in bed, and turn it off with one tap. - Morning check-in: if you didn't turn it off before bedtime, your alcohol answer is filled in for you to keep or change. If the cooler curve was on for the night, there's one optional question comparing the night to other nights after drinks. - Connecting a thermostat now starts with the list of supported brands, so you can see yours before subscribing. - Supported thermostats are listed the same way everywhere in the app. - Bug fixes.
MoreAutomated thermostat comfort scheduling
CircadiaOS supports Nest, ecobee, Honeywell, and 14 other brands through Seam integration. This allows for broad compatibility with many existing smart home setups.
You can use wearables that track sleep, such as Apple Watch, Whoop, Oura, Garmin, or Fitbit. The app uses this data to personalize your sleep temperature schedule.
CircadiaOS requires approximately two weeks for calibration. During this time, it runs a conservative schedule and observes your body's response before personalization begins.
No, CircadiaOS does not contain advertisements. The app is focused on providing a seamless and uninterrupted sleep optimization experience.
CircadiaOS offers a 1-month free trial, after which it costs $19.99 per month or $159.99 per year. Subscriptions auto-renew unless canceled at least 24 hours prior to the end of the period.
No, CircadiaOS is a sleep wellness application and is not a medical device. It does not diagnose, treat, cure, or prevent any disease or condition. Information provided is for personal informational purposes only.
After calibration, CircadiaOS tests one temperature setting at a time and retains what works best for your sleep, not just the average sleeper. Morning analysis of your wearable data further refines tonight's schedule.
Yes, you can cancel your CircadiaOS subscription at any time through your App Store account settings. Remember to cancel at least 24 hours before the end of your current billing period to avoid auto-renewal.
