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CircadiaOS: Sleep Tracker

CircadiaOS: Sleep Tracker

Sleep, Recovery & Temperature

11 ratings
5 reviews
With Ads
💪 Health & Fitness
Free
In-App PurchasesWith Ads

Details

Released
May 22, 2026
Updated
November 6, 2026

Features

Developer

CircadiaOS LLC
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About

This app automatically adjusts your bedroom temperature throughout the night to align with your natural sleep cycle. It uses your wearable data to personalize temperature curves for optimal sleep and recovery. View your sleep schedule, setpoints, and compare your best and worst nights.

✓Automatic temperature adjustment
✓Personalized sleep temperature curves
✓Wearable data integration
✓Sleep phase tracking
✓Nightly performance comparison
✓Thermostat control
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+1

What's New in CircadiaOS

1.8.2

November 6, 2026

Fixes an issue that could sign you out when the app was opened from a locked phone, and small improvements to wearable setup.

6

Subscriptions & In-App Purchases

CircadiaOS

Automatic sleep temperature optimization

$99.991 Year
Price Updates
November 9, 2026→$99.99
October 31, 2026→$99.99
May 30, 2026→$159.99
How to cancel CircadiaOS subscription ⁉️

User reviews

Most RecentHighest RatedLowest Rated

Doesn't Work

Instantly drops my account and refuses to join my thermostat and network
CCaptom601

Probably worth it

Almost as much benefit as an 8sleep. Interesting concept
AAnakin___Skywalker

Auto Pilot is nice

The title says it all I love being able to set up the app once and letting it take care of the temperature while I sleep it’s working well and the support is great.
Tthehenleycorp

Does not connect to Nest

Does not work. No tech support
FFonzie.navarro

Great app

Really simple but great idea.
Sstevenash2.0

FAQ

What is CircadiaOS?

CircadiaOS is a health and fitness app designed to automatically adjust your bedroom temperature throughout the night. It aims to optimize your sleep by aligning temperature changes with your body's natural sleep cycle.

Does CircadiaOS have ads?

Yes, CircadiaOS contains advertisements. As a free app with in-app purchases, it utilizes ads to support its services.

What devices does CircadiaOS support?

CircadiaOS is available on iPhone and iPad. It requires a compatible smart thermostat and optionally supports wearables for enhanced personalization.

How accurate is CircadiaOS?

The app builds a temperature curve from your profile on the first night and refines it with accumulated data. You can see which parts of the curve are based on your sleep data and which are still estimates.

What are the subscription options for CircadiaOS?

CircadiaOS offers several subscription plans, including weekly, monthly, and yearly options. Prices range from $2.99/week for Premium to $99.99/year for the full version.

What is the age rating for CircadiaOS?

CircadiaOS has an age rating of 17+. This is likely due to the nature of health tracking and the potential for advanced features.

When was CircadiaOS last updated?

The latest version of CircadiaOS, 1.8.1, was last updated on November 4, 2026. This indicates a relatively active development cycle.

What do users think of CircadiaOS?

CircadiaOS has a rating of 3.5 stars from 11 ratings. This suggests a mixed reception, with some users finding value and others potentially experiencing issues or having different expectations.