A scratchpad with superpowers.
Plain-text notes that do the thinking-adjacent chores for you — live math, currency & units, reactive variables, checklists and instant search.
Free for Windows 10 & 11. Or see all download options; iOS & Android to follow.
Free for macOS 12+ on Apple Silicon. Or see all download options; iOS & Android to follow.
Notulee runs natively on Windows & macOS. Try it in your browser — nothing to install. Or see all platforms.
Your notes are plain Markdown files, backed up automatically — daily and before every update.
no cloud — just you ✦
It all happens in one plain note
No ten little boxes — just the real thing, quietly doing the math, the conversions and the bookkeeping while you type.
- 1Markdown, live. Headings, bold and lists style themselves as you type — the markers stay in view, so your notes are always plain text.
- 2Live math & units. Add a math region (the boxed part) and sums, percentages and unit conversions resolve as you type.
- 3Reactive variables. Name a value in that region and reuse it; change one number and every total follows.
- 4Currency, in place. Convert money with
toinside the region — rates are cached on your device. - 5Checklists, search & export. Track work with live progress, find anything across your notes, and take it anywhere.
Your notes never leave your machine
Notulee runs entirely on your device — every smart feature computes locally and deterministically, with no guesswork. Your notes are plain Markdown files in a folder you choose, so you can edit them anywhere — Obsidian, your editor, even Claude — and your changes sync straight back, both ways. And the sensitive things need never be written at all: a disappearing note lives in memory only and vanishes on its own. No account to create.
One note, many regions
Just start typing
A note is plain text. Headings, prose, lists — write however you think. Nothing to set up.
Add a region
Turn a block into a math, checklist, sum or code region from the toolbar. Each region gets its own superpower.
Watch it compute
Variables, sums, conversions and progress update live as you edit — every result is reproducible.
Find & export
Search across everything in an instant, then export a note or the whole stack when you’re done.
Take the demo for a spin
Try the full app right in your browser — or install it as an app on any device.