One living note per idea
Stop taking notes.
Grow one.
Talk or type. Every new thought rewrites the whole note, not just the end of it: it ticks a version, keeps your voice, and grows as your thinking does. The app does the heavy lifting. You do the thinking.
Why
A hundred notes was never the answer.
Powerful workspaces turn thinking into a filing job. Simple apps scatter it across notes you never reopen. Either way, the idea stops moving the moment you hit save.
One living note per idea, and every idea under one roof. Each thought you add rewrites the whole, ticks a version, and grows the master document. The app does the heavy lifting. You do the thinking.
Notes scatter. Ideas stall.
It talks the idea out of you.
Just talk
Open the app to the sky and say what you're thinking: rambling, repetitive, unfinished. That's the point. Your words stream in as you speak and lift away into the clouds.
Watch it condense
Claude rewrites everything you've said into one coherent idea, assembled in front of you: a title, the gist, and named branches. That's your tree. Even one mumbled sentence comes back as a v1.0.
It grows with you
Change one thing and the whole note updates around it. Drop an ingredient, kill a subplot, cut a feature: every sentence it touched reconciles itself, and nothing goes stale.
Screens
A notes app that looks like weather.
Capture: just talkThe sky listens. Words drift in as you speak.
Synthesis: the revealYour rambling, returned as one clear idea.
Versions: time travelEvery idea remembers how it got here.
Everything else
Built for how thinking actually works.
Infinite branches
Every thought can hold sub-thoughts, and those hold their own. Drill into any branch and build recursively. One idea can grow a whole worldview.
Perspective diffs
Diffs describe how your thinking drifted, not which words changed. Compare any two versions of an idea and read the story between them.
Chat with a thought
Open a conversation seeded with your entire tree. Claude pressure-tests instead of validating, and the good exchanges save back in as branches.
Capture from anywhere
Paste an X post, a YouTube or TikTok video, or any article. It's read, transcribed, and woven in as source material with your note on why it matters.
Grounded in the moment
Each thought is quietly stamped with where you were and what the sky was doing: ideas anchored to the real world they occurred in.
Rapid fire
Pick an interviewer (journalist, engineer, skeptic) and answer quick questions out loud. Every answer files itself into the tree. The fastest way to flesh out an idea.
Extensions
When it's grown, it goes places.
Connect Thought as an MCP server and your tree becomes something your tools can actually read.
- Ask Claude with your thinking attached. "What did I decide about pricing?" pulls the real branch, in your words, not a guess from chat history.
- Code against a spec that's alive. Point Cursor or Claude Code at a product thought and it builds from your latest version, never a stale doc.
- Give agents your intent. A writing agent drafts from the tree, checks its draft against how your thinking evolved, and cites the branch it used.
Try it
Grow a thought right now.
Type a half-formed thought. It comes back as a living note. Add to it three times and watch the whole idea rewrite itself, for real, on the app's actual synthesis engine.
Rapid fire
Three versions in, and it's already thinking with you. Keep the code below: when Thought launches, sign up with it and this exact thought, every version of it, will be waiting.