BrainLog
Think it. Log it.
A calm markdown notebook your AI assistant can work in — and the parts it can never see.
A place to write
Type **bold** and it turns bold as you type — no
preview window, no modes. Folders hold sections, sections hold
pages, and that's the whole system. Open it and write.
Your notes stay yours
Every page is a plain markdown file. Download a folder as a zip whenever you like, and bring the notes you already have the same way. Nothing gets locked in.
Tasks live in your notes
A task is a checkbox line in a page. The task list, the board and the due dates are three ways of looking at those same lines — there is no separate to-do app hiding inside.
Your assistant’s workspace
Connect the AI assistant you already use, and your notebook becomes somewhere it can actually work: save an answer for later, draft a page, keep a reading list, plan a week as a board — writing the same markdown you would.
- It can never delete anything. The agent connection has no delete, no trash, no revoke — not as a setting, as a fact of its design.
- You watch it work. Pages and boards appear in your sidebar as they’re written, live.
- Setup is one command. Works with the assistants and agent tools you already have — see the docs.
Private where it matters
Some notes are for you, your assistant and your collaborators. Some are only for you. BrainLog draws that line folder by folder — and enforces it with cryptography, not a checkbox.
- End-to-end encrypted folders: encrypted in your browser; the server stores only ciphertext. No assistant, no share link, and not even we can read them.
- Hosted in Switzerland — strong privacy laws, GDPR-adequate — and backed up nightly off-site
- No ads, no trackers, no data resale — the subscription is the whole business model
- Install it on your phone as an app, straight from the browser
Pricing
Free
€0 forever
- One folder — full editor, tasks, boards, search
- Your AI assistant connects, with everything above
- Plus a second, end-to-end encrypted folder only you can read
- One active share link
- Export everything, any time
No card, no trial clock — the free folder is yours for good.
Cloud vault
€3 / month or €30 / year
- Unlimited folders and share links
- Invite collaborators — the people you invite pay nothing
- Live co-editing across every device
- Hosted in Switzerland, backed up daily
€3 covers you and everyone you invite — it isn’t per seat. Payment is handled by Stripe, from inside your account.
Desktop app
Free
- Your vault in a folder on your own machine
- Works fully offline
- Copying the folder is a complete backup
In the works for Ubuntu, Windows and macOS. Everything you write today exports as plain markdown, so nothing will be stuck here.