Markdown that stays plain text
Write with the characters you already know. What you type is what is stored: no hidden format, nothing to untangle later.
Tags that nest
Type #work/clients and the tag sits under #work, ready to browse.
Notes that stay plain text.
Theo Notes is a Markdown notes app for Mac, iPhone and iPad. Write fast, link your thoughts together, keep them private, and take them with you wherever you go.
Coming soonMac, iPhone, iPad
In development. No release date yet.
Type plain text. Read it laid out.
One sample note, twice. The right side is exactly what you would type. The left side is how it reads once the Markdown is drawn. The note and its contents are made up for this page.
Weekly review
Plan for the week, linked to Kickoff call.
- Send the summary
- Book the studio
| Client | Status |
|---|---|
| Birch & Co | Draft |
# Weekly review
#work/clients #reading
Plan for the week, linked to [[Kickoff call]].
- Send the summary
- Book the studio
| Client | Status |
| --------- | ------ |
| Birch & Co | Draft |Everything a notebook needs, and nothing in the way.
Wiki links
Put a title in double brackets to connect one note to another. Your notes become a web you can walk through.
Search
Look through every note at once and jump straight to the one you meant.
Themes and typography
Choose a theme, then tune the type until the page feels like yours.
Rich blocks
Tables, callouts, math, Mermaid diagrams and code, right inside your notes.
- Table
- Callout
- Math
- Mermaid
- Code
Your notes are for your eyes.
Privacy is part of how Theo Notes is built, not a setting you have to hunt for.
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End-to-end encrypted sync
Your notes sync between your devices with end-to-end encryption.
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Lock single notes
Protect any note with a password or Touch ID.
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Optional app lock
Want the whole app behind a lock? Switch it on.
Bring your notes with you. Take them with you.
Start from the notes you already have, and leave whenever you like. Your writing is never stuck.
In
Out
Let your AI assistant read and write your notes.
Theo Notes comes with a command-line tool, theonotes, and an MCP server. Claude and other AI agents can search, read and write your notes through them.
You choose what an assistant can see: scope the server to the tags you pick, or leave some tags out.
# Search your notes
$ theonotes search "kickoff call"
# Create a note
$ theonotes create "Meeting summary" \
--tags work/clients --content "Agreed next steps."
# Add to an existing note
$ theonotes append --title "Weekly review" \
--content "Send the summary."
# Connect Claude Code, limited to one tag
$ claude mcp add theonotes -- \
theonotes mcp-server --only-tags workQuestions, answered plainly.
Can I download Theo Notes yet?
Not yet. Theo Notes is in development, and there is no release date, price or App Store link. This page is the place to check back.
Which devices will it run on?
Mac, iPhone and iPad.
Am I locked into the app?
No. Notes are Markdown, which is plain text. You can export to Markdown, HTML, PDF or TextBundle, and make full backups that you can restore.
Can I bring notes from another app?
Yes. Theo Notes imports from Bear, Apple Notes, Evernote, Notion, and folders of Markdown or TextBundle files.
Who can read my synced notes?
Sync is end-to-end encrypted between your devices. You can also lock single notes with a password or Touch ID, and turn on an app lock.
How does it work with AI assistants?
A command-line tool, theonotes, and an MCP server let Claude and other agents read and write your notes. You decide which tags an assistant can see.
Does this website track me?
No. It sets no cookies, runs no analytics, and loads nothing from other companies, not even fonts. The privacy page has the details.
Theo Notes is on its way.
Coming soonMac, iPhone, iPad