§01 - featuredcircadiaopen alphaweb

A sleep log for bodies that don't run on a 24-hour clock.

Circadia 24-hour dial
plate icircadia24h dial

Not every sleep log is built for rhythms that drift past a 24-hour day. 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 will fall asleep at eleven.

Made for:
N24DSWPDASWPDME/CFSshift work
Platform:
Web alphamobile apps not shipped
Storage:
Account-backedcross-device sync
Access:
Open alpha
§02 - products

In the workshop.

Circadia leads, with Talons close behind; the rest splits into launchable apps, active prototypes, and substrates O+K is dogfooding before offering outward.

Major

Open alpha

Circadia

A sleep drift log for Non-24 rhythms, forecasts, and irregular rest patterns.

Free alpha

Talons

AI cyberdefense for the machines you depend on: ongoing monitoring, practical hardening, and permission-bound investigation.

Playable in ChatGPT

Artifice

A rules and lore archive for agent-assisted tabletop play. Eris is playable now as a ChatGPT-hosted guide.

Desktop-paired GPT bridge

Astra

Agent execution, tools, and supervision. Its GPT bridge needs a paired desktop node; the broader product remains in development.

Needs product refactor

Sieve

Pairwise ranking experiments for lists, taste, and tradeoffs.

Read more

Utilities + substrates

Downloadable Mac alpha

Feather

Visible, permission-bound support access for your computer, with a local On / Ask / Off switch.

Downloadable Mac alpha

Tradewinds

Route selected domains through an O+K endpoint while unrelated traffic stays direct.

Downloadable alpha

Conduit

A local utility for running code requests with visible review, instant feedback, and safer handoffs than random installers or curl-to-shell snippets.

macOS preview · download unavailable

Alight

A native macOS menu bar gauge for Codex, Claude Code, and Antigravity usage pressure.

Read more
Standalone dogfood

Nest

Source, releases, deploy ledgers, and package-lane control for O+K products and agents.

Standalone alpha

Chirp

Messaging for people and agents: conversations, channels, replies, notifications, and shared collaboration records.

Contract adopted

Plumage

Identity assurance and access context for people, agents, sessions, credentials, and platform grants.

Managed alpha live

Pigment

An API-addressable, agent-friendly frontend design system for discovering, composing, validating, previewing, and rendering product surfaces.

Source MVP

Quill

Social notes and longform publishing with profiles, follows, replies, and optional replayable verified history.

Read more
§03 - labs

Experiments.

Pre-MVP tools still finding their shape. Substrate work with live API or operator surfaces stays in the workshop above; Labs is for experiments that are not launchable yet.

Private development · unavailable

Lyre

A conversation companion that captures visible messages and prepares contextual reply drafts for your review.

Read more
§04 - journal

From the journal.

Working notes on the tools and the science behind them.

Nov 3Jon Meriwether

Intelligence [Agencies] Too Cheap to Meter

Hate to say it: privacy-by-default is dead.

Read
Jun 14Dayah Dover

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. The Community tab is live, Jon replaced the particle filter forecast with a tag-aware Kalman-IMM model, and the app now has enough users to expose the administrative layer under health software: platform rules, security audits, server costs, and the boring financial reality of keeping something useful alive.

Read
May 30Dayah Dover

What Is Non-24-Hour Sleep-Wake Disorder?

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 are completely normal for the disorder: marathon wake periods, sleep debt that won't clear, a sleep window that slams shut.

Read
May 27Dayah Dover

Two 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
Browse the journal ->
§05 - services

Websites, software, and systems for your business.

O+K builds websites, repairs software, automates repetitive work, and connects the tools you already use. Explore selected work, then tell us what you need.

  • Websites — new sites and rebuilds that load fast and are easy to update.
  • Repair — broken forms, failing integrations, slow or outdated pages.
  • Automation — the repetitive steps between your inbox, spreadsheets and tools.
  • Integration — connect the systems you already use so data stops being retyped.
  • AI and agents — put AI models to work on a defined task in your workflow, scoped like any other job.
selected work

See what O+K builds.

Explore website concepts, a workflow demonstration, and software we own. Each example is labeled so you can distinguish concepts from products.

Every engagement starts with a short scoping note: what we'll do, how we'll know it worked, and where it stops — before any work begins.

§06 - owl + kestrel

The two of us.

Jon builds systems; Dayah builds Circadia and humane software for bodies that do not fit the defaults. Also married.

Jon Meriwether

Jon Meriwether

Owl@jon_vs_moloch
Builder, writer, and systems tinkerer

Builder, writer, and systems tinkerer working on agentic tools, games, archives, and practical digital infrastructure.

Dayah Dover

Dayah Dover

Kestrel@spicystrippa
Flexibility teacher, model, and builder

Flexibility teacher, model, and builder of tools for bodies and rhythms that do not fit the default template.

§07 - questions

Questions we get.

01

What is Owl + Kestrel?

A two-person software workshop and estate shell. Jon builds software and infrastructure; Dayah builds Circadia and tools for bodies and rhythms that do not fit the default template. O+K is also the first customer for family products like Nest, Chirp, Plumage, Pigment, and Quill; Quill's standalone source MVP combines social notes, longform publishing, and optional verified history.

02

Can I hire Owl + Kestrel?

Yes. O+K offers websites, software repair, automation, integrations, and AI and agent work as scoped services. See Services for details, selected work, and a project inquiry. Products have their own use, download, or purchase paths; check each product for availability and required setup.

03

Are the apps free?

Pricing and access are product-specific. The portfolio is moving toward a meaningful free starting point with self-service paid upgrades; Circadia is in open alpha, Talons is free during its alpha, and several substrates are still being prepared for that public product path.

04

How do I keep up with new things?

Join the updates list or follow the journal.

05

Why Owl + Kestrel?

It is the two of us: a nocturnal systems-builder and a sharp-eyed product builder. One small workshop, two sets of projects.

§08 - updates

Updates when there is something to say.

New products, experiments, and posts from Owl + Kestrel. This preview signup only asks for an email address.