A sleep log for bodies that don’t run on a 24‑hour clock.
o mainstream sleep app will even let you log a rhythm that isn’t 24 hours long. Circadia is Dayah’s answer — it takes the pattern you actually have, finds your real drift, and forecasts the next window instead of pretending you’ll fall asleep at eleven.
In the workshop.
Circadia leads; here are the other builds — the big bets, and the small ones that are already useful.
Artifice
A rules and lore archive for agent-assisted tabletop play. Talk to Eris and run a game right now.
Play with Eris ↗Preview GPT · desktop soonAstra
A product family for agentic tools that work alone and get better together. A preview GPT is live; the desktop client is next.
Open the GPT ↗On the benchSieve
Pairwise ranking experiments for lists, taste, and tradeoffs.
Read the plan →Experiments.
Pre-MVP tools still finding their shape. Quiet right now — one thing brewing. When an experiment crosses MVP, it graduates to a real app.
From the journal.
Working notes on the tools and the science behind them.
One Month of Open Alpha
One month into open alpha, Circadia has moved from a tool I built for my own impossible sleep into an app with enough real N24 data to make the research side feel less theoretical.
Read →30 MayDayahWhat Is Non-24-Hour Sleep-Wake Disorder?
A plain-language guide to N24: what it is, what “free-running” means, why sighted people get it too, and how it’s diagnosed and managed.
Read →27 MayDayahTwo τ Changes Today, and the Bug I Caught On My Own Data
Why 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 →Flexibility, taught live.
Small online flexibility classes with Dayah — live, with class notes and replays. The schedule is still firming up; the waitlist is open.
The two of us.
Jon builds the systems; Dayah builds the bodies. (Also married.)
Jon Meriwether
Owl@jon_vs_molochBuilder, writer, and systems tinkerer working on agentic tools, games, archives, and practical digital infrastructure.
Dayah Dover
Kestrel@spicystrippaFlexibility teacher, model, and builder of tools for bodies and rhythms that do not fit the default template.
Questions we get.
What is Owl + Kestrel?
A two-person workshop. Jon (Owl) builds systems and software; Dayah (Kestrel) teaches flexibility and built Circadia. Tools, classes, and small useful things — made side by side.
How do I book a class with Dayah?
Head to Bookings and reserve an upcoming session. You don’t need an account — just your name and email.
Are the apps free?
Most are free or free-to-start; a couple have paid tiers for advanced features. Each app’s page has the specifics.
How do I keep up with new things?
The updates list below, or the journal. One-click unsubscribe, no tracking pixels.
Why “Owl + Kestrel”?
It’s the two of us — a nocturnal systems-builder and a sharp-eyed teacher. One small workshop, two sets of projects.
Updates when there’s something to say.
New apps, new posts, and class openings from Dayah. One-click unsubscribe, no tracking pixels.