7 posts about Circadia.
A plain-language guide to Non-24-Hour Sleep-Wake Disorder (N24): what it is, what "free-running" means, why sighted people get it too, how it's diagnosed and managed, and why several of its stranger features — marathon wake periods, sleep debt that won't clear, a sleep window that slams shut — are completely normal for the disorder.
Read updateWhy your τ tile might look a little different from this morning — and why the change is mostly the math finally admitting it can't fit a 30-hour cycle onto a 24-hour clock face.
Read updateWhy Circadia lets you change the math behind your sleep — and why my own settings look nothing like the defaults. Featuring a very bad Airbnb, a fourteen-hour lurch, and the embarrassing number of hours I do not spend asleep.
Read updateI went down a rabbit hole this week about how to share your data with actual researchers without doing something stupid. Here's what I learned, what I built because of it, and a small ask at the end.
Read updateCircadia's new adaptive forecast is better at handling skipped nights, naps, crashes, recovery sleep, and sudden changes in your sleep pattern. It learns only from sleep data people choose to share — and the more of your own history you share, the better chance Circadia has of understanding your pattern.
Read updateShared sleep data does not disappear into a mysterious AI pile. It helps us replay history, grade forecasts, tune the recipe, and keep only changes that make Circadia more honest and useful.
Read updateNone of the apps I tried even let me manually enter my sleep data, let alone predict my next bedtime or track my drift. So I built one. Two days into open alpha, here's what's been built, what's coming, and a real ask.
Read update