Notes
A calm place to write things down, search everything you have written, and keep it all in one file you own.
No signup, no install, nothing to cancel.
This is the real app, running on sample data — click around. Nothing here is saved, so open it in the full Web Preview when you want to keep what you make.
Why everyday users pick Capsule
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One portable file
The app, your data, and everything it needs live in a single .capsule file you can move, copy, or back up like a photo.
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100% private
No accounts, no cloud, no tracking, no ads. Nothing you write leaves your device unless you send the file yourself.
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Shareable anywhere
Send it over AirDrop, WhatsApp, or email. Whoever gets it can open it in a browser — no install, no signup.
What makes this Notes worth using
Instant search
Type a word and the note you half-remember from months ago is there. No indexing wait, no server round trip.
Clean formatting
Headings, bullets, and checklists where they help — and nothing else competing for your attention.
Distraction-free by construction
No popups, no badges, no feed. It is a text file with a good interface, which is all a scratchpad should be.
One notebook, one file
Every note travels together. Move it between machines by moving a single document.
How it works
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Open it
Try it in your browser right here, or get the desktop app for macOS, Windows, or Linux.
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Make it yours
Add your own content. Everything saves into one file on your own device as you go.
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Keep or share it
Store the file wherever you like, back it up by copying it, or send it to someone the way you would send a document.
Frequently asked questions
Can I attach images or files to a note?
Yes — attachments are stored inside the .capsule file itself, so a note and its files never come apart when you move or send it.
Is my writing used to train anything?
No. Your notes never leave your device unless you send the file yourself. AI features are opt-in and only run on what you explicitly ask about.
Do I need to create an account?
No. There are no accounts, no passwords, and no signups. Open the template and start using it.
Where is my data saved?
On your own device, inside a single .capsule file you choose the location of — the same way a photo or a spreadsheet is saved. Nothing is uploaded.
Can my friends open the file if they don't have the app?
Yes. Send them the file and they can open it in the free Capsule Web Preview in any browser, with no install and no account.
Does it cost anything?
No. Capsule and every template are free, with no subscription, no ads, and no paid tier holding features back.
Does it work offline?
Always. The app, its data, and its interface all live in the one file, so nothing needs a connection — on a plane, in a basement, or with your Wi-Fi off.
Explore the other templates
Start with Project Notes.capsule
Open it in your browser now, or install Capsule to keep files on your own machine and share them like any other document.