Notes that grow like you think
TreeNotes is a notes app built like a tree — unlimited depth, collapsible branches, instant search. Everything you write is encrypted on your device before it ever leaves it.
No credit card · Free plan forever · Set up in 2 minutes
Your personal knowledge system, organized the way your mind actually works — in branches, not lists.
Trusted by 10,000+ thinkers, writers, and researchers
Zero-knowledge encrypted.
Not even we can read your notes.
TreeNotes encrypts notes and attachments on your device before they sync. Our servers store ciphertext, not your meaning. Your private tree stays readable only to you and the people you explicitly share with.
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Why TreeNotes
Your thoughts are not a list — they're a living tree
Flat notebooks force your branching thoughts into straight lines. TreeNotes inverts that: branch first, collapse the noise, and share only the limbs you choose.
Notes in a flat app
One endless pile. Context gone. Good luck in six months.
TreeNotes
Every idea has a place — nested, collapsible, findable. Structure that thinks like you.
Features
Everything you need to think clearly
Powerful where it counts, invisible everywhere else.
Zero-knowledge encryption
Notes, attachments, even titles are encrypted on your device with AES-256 before they sync. Our servers store ciphertext — we couldn't read your notes if we wanted to.
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Instant search
Any note, any depth, in milliseconds — decrypted and searched locally, so even search respects your privacy.
Nest without limits
Go as deep as your thinking does. Unlimited levels, collapsible branches, drag-and-drop restructuring as ideas evolve.
Share branches, not everything
Grant view or edit access to a single subtree. Encryption keys are wrapped per person — everything else stays yours alone.
Fast at real depth
A clean rich-text editor, instant sync, and zero loading spinners — the tree stays quick even with thousands of notes.
Works everywhere
Web, desktop, and mobile with seamless sync. Capture on your phone, expand at your desk — your tree follows you.
How it works
From first thought to grown tree
Three steps. No manual, no migration project, no learning curve.
Capture instantly
Open TreeNotes, start typing. A fast rich-text editor with zero friction — your idea is safe (and encrypted) before you finish the thought.
Branch naturally
Nest details under big ideas, drag notes into place, collapse what you don't need. The structure grows with your thinking.
Find effortlessly
Navigate the tree or hit search. Every note is one keystroke away — even years and thousands of notes later.
The free plan isn't a trial — it's a real workspace with the exact same zero-knowledge encryption as every paid plan.
- Full tree structure, unlimited nesting
- End-to-end encryption on everything
- No credit card, no time limit
When your tree needs more room — more storage, larger files, version history — upgrade in one click.
Stop writing lists.
Start growing trees.
Your first idea takes thirty seconds to plant. Free forever, encrypted from the very first keystroke.
Zero-knowledge encrypted · No credit card required