For people who think by writing
Your thoughts are going somewhere. See where.
Capture what's on your mind by text or voice. ThoughtStream Lab helps you discover recurring themes, explore connections, and turn what matters into action.
Free plan · Unlimited capture by text or voice · Export everything, any time
Watch the walkthrough: From Thought to Action. Captions included.
How it works
From a passing thought to a clearer next step.
Four screens, in the order you meet them.
ThoughtStream LabWhat's on your mind?
I keep saying yes to things I resent doing later.
Just captured
I keep saying yes to things I resent doing later.
Capture it
Type or speak freely. Save the half-formed idea, the observation, or the question you haven't worked out.
ThoughtStream LabI keep saying yes to things I resent later.
Slow mornings are when the real thinking happens.
The same question arrived a third time today.
Give it a place
Every entry joins your private ledger. Return to what you wrote, when you wrote it, and how your understanding has changed.
ThoughtStream LabSaying yes before checking your own week
Insight: the yes comes first, and the calendar is checked afterwards.
Notice what connects
The assistant reads across your entries for recurring themes, contradictions, and connections. Consider its suggestions and decide what holds up.
ThoughtStream LabThis week
12
Captured
4
Commitments
3
Patterns
The week in words
The same thing kept returning: you make room for other people first and your own work last.
Still waiting: 2 thoughts have a date in mind and nothing booked.
Follow through
Turn an insight into a commitment. Add it to your calendar, then revisit it in your weekly review.
Unlimited text and voice capture. Your original words stay yours.
Good ideas don't vanish. They get buried.
You have the thought in the shower. On a walk. Halfway through a meeting.
You jot it in a notes app, or you tell yourself you'll remember.
Then it sits there with four hundred other notes. It never meets the idea from last month that it belongs with. And you never act on it.
Who's to blame (it isn't you)
Most tools are built to store thoughts, not to notice them. And many AI tools make it worse: they rewrite what you said until it no longer sounds like you.
You don't need more storage. You need a way to see what you keep thinking about.
Four simple moves. One private place.
ThoughtStream Lab turns scattered thoughts into clear decisions you actually follow through on.
Notice
Capture it the moment it arrives
Type it or say it. No editing, no judging.
Accumulate
Keep it exactly as you wrote it
It goes into your private ledger and builds up evidence over time.
Discover
See the patterns you missed
The assistant brings up themes, contradictions, and connections.
Act
Follow through on what holds up
Make it a commitment, put it on your calendar, check in during your weekly review.
01 · Notice
Catch the thought the moment it arrives.
Type it, or just say it out loud.
Your own browser turns your voice into text. ThoughtStream Lab keeps the words and never stores a recording. Capture has no limit on any plan, even the free one.
- Text or voice, whichever is faster right now
- No folders to choose and no format to follow
- Unlimited on every plan
02 · Accumulate
Keep it exactly as you wrote it.
Every thought lands in your private ledger, word for word, with its edits and full history. As related thoughts pile up, each one moves along a simple scale:
You can see how much evidence is behind an idea before you bet on it.
03 · Discover
See the patterns you missed.
The assistant reads across your entries and brings up three kinds of things:
Themes
Customers want clarity, not more features. 6 entries since August.
Contradictions
You wrote 'fewer features' on Sep 17 and planned three new ones on Sep 27.
Connections
This echoes your note on onboarding from August 12.
Sample entries are illustrative.
It can also link a new thought back to older ones, and run web research when you ask.
Every finding is a suggestion. Nothing counts as true until you accept it.
04 · Act
Follow through on what holds up.
When a pattern holds, turn it into a commitment.
Put it on your Google Calendar or a private calendar feed. Then check in during your weekly review, which is built from what you actually wrote.
Fewer ideas lost. More ideas finished.
The ThoughtStream Lab rule
Your words are never rewritten.
Your entries stay exactly as you wrote them.
What the assistant says lives in a separate layer, clearly marked and kept apart from your words. It can propose. Only you decide.
Typical AI writing tools
ThoughtStream Lab
When it's time to write, it writes like you.
Proofread a note. Get a first draft or a redraft. Turn a thought into a letter with your own letterhead and sign-off.
Add a short note about how you write. Writing actions also use short samples of your recent entries, so the draft sounds like you and not like a robot.
Connect your own assistant
Connect Claude, ChatGPT, or Cursor. It works as you, sees only your records, and shows you exactly which abilities it is asking for. You approve or refuse each one.
Bring your own AI key (paid plans)
Add your own OpenAI, Anthropic, or Google Gemini key, and those actions don't count against your monthly allowance (web research always counts). Your key is scrambled when stored and never shown back to you.
Jordan Avery · Avery & Co.
Dear Sam,
Following our conversation on Tuesday, here is the plan I have been circling for three weeks.
Two things to start, and nothing else until they are done.
Jordan
Private by design
Your words stay yours.
Scrambled before it's stored
Your text is scrambled before it's written to the database, using key material tied to your account.
No ads
Your thoughts are not an ad product.
Never sold
What you write isn't for sale.
Export everything
Take all of it with you, any time.
Delete any time
Close your account from Settings whenever you like.
No voice recordings
Your browser transcribes speech, and only the words are kept.
The best time to start was last week. The next best is today.
A pattern only shows up once there's enough to look at.
Every thought you capture today is evidence your future self can use.
Every thought you don't is gone.
Invite a friend. When you each join and subscribe, you both get your first month of unlimited AI on us.
No countdown timers. No fake "only 3 spots left."
How it compares
Most tools file your thinking. ThoughtStream Lab reads across it.
A notes app keeps what you type. An AI writing assistant replaces it. Neither habit is built to notice what you keep coming back to.
Where a thought goes
What reads across your entries
Your words afterwards
Who decides what's true
How it ends
What you take with you
Free to start. Free to stay.
Capture, your ledger, commitments, your calendar, and export are free on every plan. Pay only if you want more AI actions.
Free
$0forever
- AI actions per month
- 5
- Unlimited capture (text and voice)
- Private ledger, evidence, history
- Commitments and calendar
- Export everything
ThoughtStream Lab Plus
$9/ month
- Yearly (two months free)
- $90 / year
- Pay once, no renewal
- $249
- AI actions per month
- 200
- Every thought analyzed, with connections back to earlier ones
- Pattern discovery across your whole ledger
- Weekly reviews, and web research on what your thoughts raise
- Letters to real addresses, up to 30 a day
- Run AI on your own provider key, and pull your data with the API and CLI
ThoughtStream Lab Pro
Most popular$29/ month
- Yearly (two months free)
- $290 / year
- Pay once, no renewal
- $499
- AI actions per month
- 1000
- Analyses, patterns and reviews run on the strongest model
- Everything in Plus
- Letters to up to 100 people a day
- Enough to analyze, research and review every day of the month
An AI action is one piece of assistant work: analyzing a thought, finding patterns, a weekly review, web research, a proofread, a draft, or a message to one of the assistants. It's only counted once the work starts, and your allowance resets on the 1st of every month.
Give ThoughtStream Lab to someone. Buy a plan as a gift and we'll email you a code to pass on. Give a gift →
What do you have to lose?
Start on the free plan. Capture as much as you like, for as long as you like.
If it isn't for you, export everything and walk away. Your words leave with you.
Questions worth asking.
Notice what you notice.
Every thought captured. Every pattern surfaced. Every insight turned into action.
And every word still yours.
Free plan · Unlimited capture · Export anytime · thoughtstreamlab.com