- 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.

- Apple Home: CircadiaOS now sets up your schedule in the Home app a week at a time, and extends it every time you open the app. If you don't open CircadiaOS for about a week, it stops changing your thermostat until you open it again. With notifications on, you'll get one reminder before that happens. - Signing out or deleting your account now removes the CircadiaOS automations from your Home. If it can't, the app tells you how to remove them in the Home app. If your subscription ends, they're removed the next time you open the app. - Thermostat setup: every connect screen now has an "All thermostats" button to get back to the list, and you'll see clearer messages when a connection doesn't go through. - More reliable purchases and Restore. - Home no longer says your thermostat isn't connected when it is, including thermostats connected through Apple Home. - Settings only says Saved once your changes are saved. - Bug fixes.

- New weekly Premium plan - Refreshed setup flow - Share CircadiaOS with friends to earn Premium time - Bug fixes and improvements

Improved install attribution for iOS 14.5 and later.

Adjust your temperature curve from day one. Onboarding now shows the same schedule your home receives. Apple Home thermostats connect from the brand list.

Adjust your temperature curve from the Home screen. Tap + or – to shift the whole night warmer or cooler.

Nest and Apple Home thermostats are now supported. Connect through the Home app to set up.

Setup is now three screens. Build your temperature plan and watch it change as you go, then pick your thermostat brand directly. Also fixes the tracking permission prompt and thermostat setup.

Rebuilt onboarding. Setting up now takes four screens instead of twelve, and you can see and adjust your temperature plan while you build it. Plus fixes to thermostat pairing and schedule changes.

Small updates under the hood.

Two new screens show the reasoning behind your night. Why This Curve explains what each part of your temperature curve is doing and where the number came from — your profile, our model, or your own recorded nights. Best vs Worst compares your highest and lowest scoring nights and shows what actually differed between them. Every claim is labeled with how much of your own data is behind it, so you can tell the difference between a starting estimate and a pattern from your own sleep. Also in this release: - Refer a friend and you both get a free month - Fixed the temperature chart for anyone using a warmer temperature range - Various stability improvements

Refer three friends and get a free month of Premium. Plus a smoother setup flow and fixes to the nightly schedule chart.

A new setup experience that builds your temperature schedule as you go, plus a redesigned subscription screen.

Reliability improvements and updated internal analytics.

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

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.

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.

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.

Improved analytics and performance. Added a privacy prompt so you can control how your data is used for advertising measurement.

New App Store Screenshots and Description

Performance improvements and minor refinements.

Free just got more useful — no extra hardware required. - Start with just your profile. Get a personalized temperature schedule based on your age and sleep window, right away — no wearable needed. - A wearable is now fully optional on Free and Lite. Connect one whenever you like for a richer picture, or skip it entirely. - Lite night view: tap any night to see that evening's temperature schedule and the comfort note you left. - A cleaner, clearer setup flow that only asks for what your plan actually needs. Thanks for using CircadiaOS. Questions or feedback? Reach us anytime from Settings.

CircadiaOS Lite is here. • Lite — automatic temperature control. CircadiaOS now runs your four-phase nightly schedule on your thermostat for you, every night. A quick morning comfort check-in lets you fine-tune how each night feels. Works with ecobee and Honeywell thermostats. • Redesigned Method tab. A new Plans / Science view shows what each plan does and the temperature science behind your schedule. • A clearer paywall showing all three plans — Free, Lite, and Premium — side by side, with honest pricing. • Stability improvements and refinements throughout.

First-time setup is clearer: a short welcome now walks you through what CircadiaOS does when you sign in, so you know how it works from the start.

This update polishes the CircadiaOS experience: - Clearer, more helpful messages when something goes wrong during sign-in or setup - A cleaner Google sign-in experience - Small refinements across the app Thanks for using CircadiaOS. As always, we'd love your feedback.