---
title: "CircadiaOS: Sleep Tracker - Reviews, Revenue and Downloads in United States | Apple App Store"
description: "CircadiaOS adjusts your bedroom temperature through the night, automatically.  Your body temperature isn't constant while you sleep. It drops as you fall asleep, stays low through your deepest sleep, "
---

# CircadiaOS: Sleep Tracker — United States
> Sleep, Recovery & Temperature

![CircadiaOS App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/f8/ef/b4/f8efb4d2-3bb3-9014-1718-03d8071a593d/AppIcon-0-0-1x_U007epad-0-1-85-220.png/434x0w.png)

**Developer:** [Unknown](https://apptail.io/developer/unknown-wpMmxc)
**Category:** Health Fitness
**Rating:** 3.6/5 (11 ratings)
**Price:** Free
**Bundle ID:** com.circadiaos.app
**Store:** Apple App Store
**Country:** United States
**Version:** 1.8.0 (released 2026-10-30)
**Original Release:** 2026-05-22
**Languages:** English

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id6761959749)
**AppTail Page:** [https://apptail.io/app/circadiaos-sleep-tracker-rpaB/united-states](https://apptail.io/app/circadiaos-sleep-tracker-rpaB/united-states)

## CircadiaOS Description
CircadiaOS adjusts your bedroom temperature through the night, automatically.

Your body temperature isn't constant while you sleep. It drops as you fall asleep, stays low through your deepest sleep, and rises again before you wake. A thermostat held at one number all night works against that.

CircadiaOS builds a temperature curve for your night and drives your smart thermostat to follow it. Connect a wearable and the curve adapts to your own recorded nights instead of a general model.

HOW IT WORKS
- Connect your thermostat and your wearable
- CircadiaOS builds a curve from your profile on night one
- As your nights accumulate, the curve shifts to your own data
- See exactly which parts come from your sleep and which are still estimates

WHAT YOU SEE
- Tonight's schedule, phase by phase
- Why each setpoint is what it is
- Your best and worst nights, side by side, and what differed

Requires a compatible smart thermostat. A wearable is optional but unlocks personalization from your own sleep data.

Terms of Use: 

## CircadiaOS Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/85/58/54/85585469-9ba8-e678-4528-0d8c2929bdd8/06-settings.png/1284x2778.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/96/f4/b4/96f4b4b8-accf-16dd-373e-b742cbf367a2/02-wearable.png/1284x2778.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/f3/b1/cc/f3b1cc23-bb5e-c2f9-c40b-9a3342e13ab4/03-thermostat.png/1284x2778.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/27/63/2a/27632a8c-67d4-2aad-cb94-92286bf42784/04-tonights-plan.png/1284x2778.png)
- [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/6c/d8/fa/6cd8fafc-a10e-75e6-b2d9-e3c726d588d2/05-sleep-history.png/1284x2778.png)
- [Screenshot 6](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/f5/61/22/f56122d9-6443-5065-6666-35003d4e3219/01-introduction.png/1284x2778.png)

## CircadiaOS Rating Breakdown in United States
- 5 stars: 7 (64%)
- 4 stars: 0 (0%)
- 3 stars: 0 (0%)
- 2 stars: 0 (0%)
- 1 stars: 4 (36%)

## CircadiaOS Reviews in United States

### *---- "Doesn't Work"
Instantly drops my account and refuses to join my thermostat and network
-- Captom601, 2026-10-12

### ***** "Probably worth it"
Almost as much benefit as an 8sleep. Interesting concept
-- Anakin___Skywalker, 2026-09-24

### ***** "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.
-- thehenleycorp, 2026-08-28

### *---- "Does not connect to Nest"
Does not work.  No tech support
-- Fonzie.navarro, 2026-08-25

### ***** "Great app"
Really simple but great idea.
-- stevenash2.0, 2026-08-13

[View all CircadiaOS reviews and detailed analytics on AppTail](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=reviews)

## CircadiaOS In-App Purchases
| Item | Price |
|------|-------|
| CircadiaOS | $159.99 |
| CircadiaOS Lite Monthly | $9.99 |
| CircadiaOS Lite Yearly | $99.99 |



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