One calm space
for everything you think.

A second brain that adapts to how you already think — quietly powerful, beautifully calm, and yours to shape.

No credit card · Private by design · Yours to shape

Today
  • Ship landing page
  • Call investor
  • Review Q2 roadmap
📝Notes
  • Pricing strategy v3
  • User interview — Maya
  • LaTeX cheatsheet
🎯Matrix
  • Urgent + Important: 2
  • Important: 5
  • Delegate: 1

Why Kōzō exists

The mind deserves better tools.

Most people don't lack ideas. They lack a place where those ideas can live, grow, connect, and become something real. Kōzō is that place — calm, private, and shaped by you.

Human first

AI helps you think, never replaces it. You stay the author.

Private by design

Your thoughts, journals and ideas are yours. Encryption is a principle, not a feature.

Shape your system

Turn features on, off, or rebuild them. Your brain isn't a template.

What's inside

One workspace. Many shapes.

Capture anything in one tap

Magic-plus button captures any thought in 2 seconds — keyboard, mouse or voice. Your stream becomes structured tasks and notes automatically.

  • Voice dictation
  • AI parsing
  • Inbox triage

Notes that connect

Markdown + LaTeX, blocks, wikilinks, file embeds and a graph view. A note can become a meeting log, a research page, or the heart of a project.

  • Backlinks & wikilinks
  • Block editor
  • Object-typed templates

See what actually matters

Today, Upcoming, Someday, Eisenhower matrix, kanban — pick the lens that fits. Drag to reschedule, tag to triage.

  • Eisenhower matrix
  • Kanban view
  • Recurring tasks

Time-block without leaving home

Drag tasks onto a calendar. Subscribe to .ics feeds, sync birthdays from your contacts, and keep your day in one calm pane.

  • ICS subscriptions
  • Birthdays auto-imported
  • Time zones for travel

Everything is an object — and they connect

People, places, projects, books, ideas. Each becomes a page that gathers everything related — past and future — automatically.

  • Graph view
  • Auto-linking
  • Tags hierarchy

Flow when you need it

Pomodoro, ambient sound, distraction-free mode. Quiet the stack and do the work that matters.

  • Pomodoro timer
  • Ambient sounds
  • Reduced motion

Learn deeper with flashcards

Spaced-repetition (FSRS) built in. Turn any note into a deck. Daily reviews that actually stick.

  • FSRS scheduler
  • Decks per workspace
  • Review metrics

Stay solo, or collaborate

Shared spaces, organisations, custom roles. Invite teammates without losing the calm.

  • Workspaces
  • Roles & permissions
  • Guest access

Diagrams, mindmaps and flow

Sketch ideas as mindmaps, plan with kanban, draw flowcharts — without leaving your note.

  • Mindmaps
  • Kanban
  • Flowcharts

Try it

Test-drive Kōzō, right here.

Tiny live demos of the real things inside the app. No signup needed.

Type naturally

Quick capture parses your words.

Try: Call mom tomorrow #personal

Inbox

  • Send pitch deck
    tomorrow#work

Built for the way you work

Bend it to your shape.

Founder

Run a startup from one canvas

Capture investor calls into action items. Tag tasks by revenue impact. See what's urgent vs. what's just loud.

Researcher

Notes that connect

Wikilinks, LaTeX, backlinks panel. Object-typed templates for experiments, papers, lit-review.

Student

Learn deeper, plan smarter

Pomodoro, FSRS flashcards, Markdown notes with formulas. Daily plan from your inbox in one click.

Team lead

Shared spaces, custom roles

Invite teammates with the exact permissions you need. Calm by default.

Creator

Ideas in, content out

Voice-dump on a walk; AI turns it into structured notes and tasks. Time-block recording sessions.

Anyone

A quiet place for your life

Diary, reading list, recipes, playlists, plans. One home for everything.

Capabilities

Everything Kōzō does, in one place.

We built the things we wished existed elsewhere. No upsells, no upgrade walls for the basics.

One-time per-device option

Pay once, own it. No subscription required.

Magic-plus quick capture

One tap, one keystroke — anywhere in the app.

Voice dictation in-app

Speak. Kōzō transcribes and structures it.

AI that parses speech → tasks

Natural language becomes scheduled, tagged work.

Markdown + LaTeX notes

Write in plain text. Render beautiful math.

Backlinks & wikilinks

Every note can become a hub. [[Type to link]].

Eisenhower matrix view

Sort the urgent from the important, visually.

Pomodoro focus timer

Built in. Persists across pages and refreshes.

Bring your own AI key

OpenAI, Anthropic, Mistral, Perplexity — your choice.

Choose your favorite search engine

Default to whatever you actually use.

Customizable nav

Top, bottom, side — your fingers, your layout.

Multi-currency pricing

USD, EUR, GBP, CHF, NOK, SEK, DKK, JPY, KRW.

Light + dark mode

Auto-follows your OS or pin one.

Built in Europe 🇪🇺 for the world 🌍

Privacy-first by design and by law.

Our pledge

50% of profits, given back.

Once Kōzō is profitable, half of profits will be donated to or invested in causes aligned with our values: founder support, education, creative communities and sustainable innovation. A pledge means nothing without transparency — we'll show our work.

Pricing

Start free. Scale when you're ready.

Discounts for students and early-stage startups. Pay once for personal, or subscribe.

Personal

One-time payment, per device. Yours forever.

$39once

1 device

Pro

AI, sync, and shared spaces for serious users.

$9/mo

1 user, all devices

Team

Organizations, roles, analytics — for growing teams.

$19/mo

Per user, up to 50

Enterprise

SSO, SCIM, audit log, and a real human to call.

Custom

Unlimited

FAQ

Quick answers.

What's the difference between Personal and Pro?+

Personal is a one-time payment that unlocks Kōzō on a single device — no AI, no sync. Pro is a monthly subscription that adds cloud sync across all your devices, AI capture, and shared spaces.

Do you offer student discounts?+

Yes — 50% off any subscription plan with a verified .edu (or equivalent) email. Toggle the student switch on the pricing page.

Which currencies do you accept?+

USD, EUR, GBP, CHF, NOK, SEK, DKK, JPY, and KRW. Pick yours from the currency switcher at the top of the pricing page.

Can I bring my own AI key?+

Yes. From Pro up, plug in OpenAI, Anthropic, Mistral or Perplexity — Kōzō never sees your traffic.

Is my data encrypted?+

All data is encrypted in transit and at rest. End-to-end encrypted private notes ship on the roadmap.

Can I import my existing notes?+

CSV, PDF, DOCX, Markdown and HTML import is live today. Direct connectors for popular note apps are on the roadmap.

Quiet your stack.

Sign in once and Kōzō remembers everything: your theme, your nav layout, your favourite AI, your projects.

Start free