CircadiaOS: Sleep Temperature

Turn the smart thermostat and wearable you already own into a personalized sleep system that adjusts your bedroom through every phase of the night.

Your body doesn’t sleep at one temperature.

CircadiaOS turns the smart thermostat you already own into a personalized sleep system. It automatically cools and warms your bedroom across the night based on your sleep schedule, wearable data, and individual response to temperature.

No expensive mattress system. No water-cooled cover. No additional sleep hardware.

HOW CIRCADIAOS WORKS

Your night is divided into four temperature phases:

• Pre-sleep • Early night • Late night • Pre-wake

CircadiaOS creates a temperature schedule for each phase and sends the complete schedule to your smart thermostat before bedtime.

THE CALIBRATION PHASE

CircadiaOS begins with a 14-night calibration period.

During calibration, the app runs a conservative baseline temperature schedule and measures how your body responds. Each morning, your connected wearable sends a summary of the previous night, including sleep duration, sleep efficiency, HRV, REM sleep, and deep sleep.

CircadiaOS compares each night with your personal baseline and calculates a Sleep Quality score. This gives the system enough information to understand your normal sleep patterns before making personalized adjustments.

PERSONALIZATION OVER TIME

After calibration, CircadiaOS begins testing small temperature changes.

The system changes one variable at a time, such as making your early-night temperature slightly cooler. It then measures whether your sleep improved compared with your baseline.

Changes that work are kept. Changes that do not are removed. Over time, CircadiaOS learns the temperature curve associated with your strongest nights and continues refining your schedule.

It is built around your response, not a generic recommendation for the average sleeper.

NO REAL-TIME SLEEP STAGING REQUIRED

CircadiaOS does not need to detect your sleep stages live or constantly change the thermostat while you are sleeping.

Your wearable sends a sleep summary after you wake up. CircadiaOS uses that information to prepare the temperature schedule for the following night.

CHOOSE YOUR LEVEL

Free provides a recommended overnight temperature schedule that you can follow manually on your thermostat.

Lite automatically runs the schedule on your connected thermostat and uses morning comfort check-ins to fine-tune it.

Premium adds wearable sleep measurement and personalizes the schedule to your individual sleep patterns over time.

WORKS WITH TECHNOLOGY YOU ALREADY OWN

Compatible wearables include Apple Watch, Whoop, Oura, Garmin, and Fitbit.

Compatible smart thermostats include Nest, ecobee, Honeywell, and many other leading thermostat brands.

YOUR BEDROOM, TUNED FOR SLEEP

Most sleep apps only tell you how you slept. CircadiaOS uses your sleep data to improve the environment you sleep in next.

Download CircadiaOS and turn your existing smart thermostat into a personalized sleep temperature system.

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