Capture ideas at the
speed of thought

NoteStream is a fast, distraction-free notebook — one endless stream for your notes, to-dos, and ideas. Synced to every device, even offline — and shared live, together.

Launch App Explore features

Runs in any browser · Works offline · Live collaboration

The NoteStream app: a stream of notes with hashtags and to-do checkboxes, next to a sidebar with filters, folders, and tags.
Features

Everything you need to stay in flow

No setup, no structure to maintain. NoteStream organizes itself around how you already think.

Live sync, everywhere

Edits merge conflict-free in real time — type on your Mac, watch it land on your phone. Built on CRDTs, so nothing is ever lost to a sync conflict.

Offline-first

Your notes live on your device first. No connection, no problem — everything syncs the moment you're back.

Tags, as you write

Drop a #tag anywhere in a note and it files itself — every tag becomes a living collection in your sidebar.

To-dos in your notes

Any line becomes a task. One filter shows every open to-do across all your notes — nothing slips through.

Link ideas with +relations

Ideas don't live alone. Type + to link notes together, and hop between connected thoughts from the sidebar.

AI that edits with you

Connect AI to read, draft, and rewrite notes through a safe, structured API — your stream becomes a workspace your assistant can actually work in.

Speak it, read it later

Tap the mic and talk. NoteStream records and transcribes your voice notes word for word — ready to search and tag.

Add notes with Siri

Capture a thought hands-free — Siri drops it straight into your stream without you even opening the app.

Edit together, live

Invite anyone into a note and write side by side — live cursors and selections, every keystroke synced. Sharing a link is just the start.

Dark mode

For late-night notes — the whole app follows your system theme, easy on the eyes.

Folders, when you want them

Prefer hierarchy? Nest folders as deep as you like — the stream and your structure coexist happily.

Platforms

Your stream, on every screen

One account, one stream — every device stays in sync.

Web

Nothing to install. Open the app and pick up exactly where you left off.

Launch App

Desktop

A native Mac app with local storage and automatic updates built in.

Apple Silicon Intel Mac
Direct download (.dmg) · updates itself after install

iPhone & iPad

The iOS app is built for capture on the go — jot it down before it fades.