# CircadiaOS: Sleep Temperature — Tune your bedroom for sleep

> Personalized smart thermostat control for optimal sleep temperature. (iPhone/iPad app by ARMANI MARLEY JOHNSON.)

- Source: https://appshunter.io/ios/app/circadiaos-sleep-temperature/id6761959749 (this page in markdown: same URL + `.md`)
- Developer: [ARMANI MARLEY JOHNSON](https://appshunter.io/developer/1892208236)
- Category: Health & Fitness
- Price: Free with in-app purchases
- Rating: 4.40/5 from 7 App Store ratings · 1 written reviews indexed
- Age rating: 17+
- Requires: iOS 18.0 · 17 MB
- Languages: American English
- Released: 2026-05-22
- Data updated: 2026-08-23
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/circadiaos-sleep-temperature/id6761959749/reviews.md

## What is CircadiaOS?

This version adds one user-facing change: an informational screen shown immediately before Apple's App Tracking Transparency prompt, explaining why we request permission. It has a single action and always proceeds to the system prompt — there is no alternative path and no functionality gated on the user's choice.

All other changes are internal analytics SDK integration (AppsFlyer for install attribution, plus additional event instrumentation for our existing TikTok SDK). No changes to pricing, subscriptions, or product functionality.

Full functionality requires pairing a smart thermostat and a wearable device. The demo account has representative data pre-populated so the core experience can be reviewed without hardware.
Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

## Key features

- Learns ideal sleep temperature
- Personalized four-phase temperature schedule
- Integrates with smart thermostats
- Syncs with sleep-tracking wearables
- Analyzes sleep quality
- Two-week calibration period

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| CircadiaOS Lite Monthly | $9.99 | per month |
| CircadiaOS Lite Yearly | $99.99 | per year |
| CircadiaOS | $159.99 | per year |
| CircadiaOS | $19.99 | per month |


## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/circadiaos-sleep-temperature/id6761959749/reviews.md

### 5/5 — Great app

*2026-08-13*

Really simple but great idea.

## Frequently asked questions about CircadiaOS

### What smart thermostats does CircadiaOS support?

CircadiaOS supports Nest, ecobee, Honeywell, and 14 other brands through Seam integration. This allows for broad compatibility with many existing smart home setups.

### What wearables can I use with CircadiaOS?

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.

### How long does the calibration period for CircadiaOS last?

CircadiaOS requires approximately two weeks for calibration. During this time, it runs a conservative schedule and observes your body's response before personalization begins.

### Does CircadiaOS have ads?

No, CircadiaOS does not contain advertisements. The app is focused on providing a seamless and uninterrupted sleep optimization experience.

### What is the cost of CircadiaOS?

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.

### Is CircadiaOS a medical device?

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.

### How does CircadiaOS personalize temperature settings?

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.

### Can I cancel my CircadiaOS subscription at any time?

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.

## Version history (last 5 releases)

### 1.6.7. — 2026-08-20

Reliability improvements and updated internal analytics.

### 1.6.6. — 2026-08-16

Behind-the-scenes improvements to how CircadiaOS reports the results of temperature adjustments.

### 1.6.5. — 2026-08-14

You can now disconnect your thermostat directly from Settings.

Clearer plan descriptions so you can see at a glance what Free, Lite, and Premium each include.

### 1.6.4. — 2026-08-13

WHAT CHANGED IN THIS BUILD (1.6.4 / build 38)
Onboarding copy only. The three intro screens have new text, and the button now reads "Continue" on the first two screens and "Get started" on the third. No new functionality, no new in-app purchases, no changes to data collection or the privacy label.

HOW TO REVIEW
Sign in with the demo account provided above. The three onboarding screens appear on first launch.

### 1.6.3. — 2026-08-12

Behind-the-scenes improvements to help us understand which channels bring new users to CircadiaOS. No changes to your sleep data, schedules, or app experience.

## Related topics

[armani marley johnson](https://appshunter.io/ios/topics/armani-marley-johnson) · [circadia](https://appshunter.io/ios/topics/circadia)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-23.*