Changelog

Every cairn we’ve stacked.

Cairn ships slowly, on purpose. A record of what has landed — and a glimpse of what’s next.

On the horizon

brewing
  • Soon

    Export to Markdown & PDF

    Take any thread out of Cairn in one click — clean Markdown or a formatted PDF, no lock-in.

  • Exploring

    Thread version history

    Browse and restore past drafts of any thread, with named snapshots and a visual diff view.

  • Exploring

    AI-detected Clean Up piles

    Beyond tag clusters and duplicates — embeddings-driven sprawl and reading-list detection, so Clean Up catches patterns keyword matching can't.

  • Exploring

    Home screen & lock screen widgets

    Today's task count, quick capture, and a surfaced note — right from your home screen, lock screen, and watch face.

Ask becomes a first-class way to think with Cairn, and the mobile app catches up completely.

link the launch notes to this thread?
proposed · linkNotes
“heliotrope launch notes” ↔ “the shape of rest”
AcceptReject
2 sources citedsave as thread →

Ask

A persistent dialogue grounded in your own notes — two-stage retrieval finds what's relevant, Claude proposes creating, linking, tagging, or archiving notes as cards you approve, and any exchange saves straight into a thread.

today
Today
Search
Ask
You

Mobile, redone

A full editorial redesign — vector icons, a 4-tab nav, and Ask, Cleanup, Summit, and Spaces now at parity with desktop. Semantic search backs both platforms alongside keyword matching.

An Obsidian-style vault port, and a lighter Cairn AI tier.

files
projects/
note.md
launch.md
journal/
⇄
cairn
the launch
[[projects/note]]

Vault sync

Point Cairn at an existing folder and it stays in sync both ways — wiki-links resolve, backlinks surface automatically, and a Files sidebar mirrors your original folder structure.

Cairn Unlimited joins the lineup, with annual plans and a real billing backend.

Sync
$3
AI
$9.99
Unlimited
$29.99
billed yearlysave 20%
dodo payments · revenuecat

Cairn Unlimited

A third tier for daily heavy use — fair-use unlimited tokens, higher rate limits, and priority access to new AI features. Annual billing at 20% off across every paid tier, backed by Dodo Payments and RevenueCat.

Founder access, a self-hosted updater, and rapid post-launch patches.

Cairn Unlimited
Forever.
Founding member · no subscription, ever.
Activated
#001

Founder keys

Early supporters can activate a permanent founder key — full Unlimited access, no subscription, no expiry. One key per person, locked to your account.

Cairn is up to date
v0.3.4→v0.3.5
via cloudflare R2complete
2.7 MBno token required

Cloudflare R2 updater

The macOS auto-updater now pulls binaries from Cloudflare R2 instead of GitHub Releases — faster downloads, no rate limits, no personal access token required.

A live knowledge graph, long-form threads with TipTap, and a hardened local vault.

Knowledge graph

D3 force-directed graph with automatic tag clusters, hover highlighting, and a calendar date-picker for due dates. One click navigates to any note from above.

B
I
H
✦ AI on
the shape of rest
Sundays used to feel like a deadline. What if rest was a design decision?
∫₀^∞e−x dx = 1KaTeX
notes from june
sub-page

Thread editor

TipTap-powered long-form writing with inline KaTeX math, AI auto-format toggle, and sub-thought Pages merged into one unified surface. Lazy-loaded to keep the main bundle small.

Cloud sync, Cairn AI, Summit, and publish-to-web — the full foundation, shipped.

desktop
mobile
synced · 2s ago
convex + local-first

Cloud sync

End-to-end sync via Convex with an offline outbox. Notes, tags, connections, and Spaces propagate across devices instantly — your key never leaves your machine.

what themes keep coming up?
Rest and recovery
Systems you can trust
Letting things be done
AskTidyFormatno key needed

Cairn AI

A server-keyed Claude proxy — Ask, Tidy, Format, and tag suggestions without touching an API key. Per-tier usage windows with a built-in daily budget meter.

week of June 9 – 15
23
RESOLVED
4
THREADS
2.1k
WORDS
8
DAY STREAK
“You keep returning to rest as a design problem.”

Summit

A weekly review that surfaces what you resolved, threads you advanced, words written, and — on the AI plan — the themes you keep circling.

the shape of rest
Sundays used to feel like a deadline. What if I just…
↗cairn.io/t/shape-of-restlive

Publish to web

Any thread becomes a public cairn.io page in one click with warm serif typography. Your vault stays private; only that thread goes public.