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Every note you write in a cloud-based app is stored on someone else's server. Your journal entries, business plans, passwords, medical notes — all sitting in a database you do not control. A private notes app should mean exactly that: private. Not "we promise we won't read it" private. Architecturally private.

MiOffice Notes is built on a zero-server architecture. Your notes are stored in your browser's local storage. When you share, data travels peer-to-peer over WebRTC with end-to-end encryption. There is no server in the middle. No database. No backup that someone can subpoena. Your notes exist only on your device and the devices you choose to share with.

Private Notes — Zero Server Storage

E2E encrypted. P2P sync. No account. No cloud. Your notes belong to you.

Start Private Notes →

What "Private" Actually Means

Most note apps claim privacy but store your data on their servers. The difference matters:

Privacy Level	How It Works	Examples
Server-stored (unencrypted)	Company can read your notes. Employees, hackers, and governments can access them.	Google Keep, Evernote, Notion
Server-stored (encrypted at rest)	Encrypted on disk but the company holds the key. They can decrypt if needed.	Apple Notes, OneNote
Server-stored (E2E encrypted)	Server stores ciphertext. Company cannot read it. But they store it and know metadata.	Standard Notes, Joplin
No server (P2P E2E encrypted)	No server stores anything. Data lives on your devices only. P2P sync when sharing.	MiOffice Notes

MiOffice Notes occupies the strongest privacy position possible: there is no server to hack, no database to breach, no backup to subpoena, and no employee who can peek. The data simply does not exist outside your browser.

How to Use Private Notes

1
Open MiOffice Notes
Navigate to mioffice.ai/notes. No account creation, no email, no phone number. Just open and type.
2
Write Your Private Notes
Everything you type is saved to your browser's local storage. No network requests are made. Your notes never leave your device.
3
Share Securely (Optional)
If you need to share, generate a P2P link. The recipient connects directly to your browser via WebRTC. All data is end-to-end encrypted. No server relays your content.

Use Cases for Encrypted Notes

Personal journals — Write your most private thoughts without worrying about data breaches or corporate snooping.
Passwords and credentials — Temporary storage for passwords before moving to a password manager. No cloud exposure.
Medical notes — Track symptoms, medications, and doctor visit notes with HIPAA-level privacy by design.
Legal and financial — Draft sensitive legal documents or financial plans without creating a discoverable cloud copy.
Whistleblowing and journalism — Sources and notes that must not exist on any server. P2P sharing leaves no server-side trace.

The Architecture of Privacy

MiOffice Notes uses Yjs CRDTs (Conflict-free Replicated Data Types) for real-time collaboration. When you share a note, your browser establishes a direct WebRTC connection with the recipient. Data is encrypted end-to-end before transmission. The MiOffice signaling server only helps establish the initial connection — it never sees or stores your note content. Once connected, all data flows directly between browsers. If the signaling server goes offline, existing connections continue working.

Security note: For maximum privacy, use MiOffice Notes in a private/incognito window. When you close the window, local storage is wiped — your notes vanish completely with no recovery possible.

Frequently Asked Questions

Can MiOffice read my notes?

No. Your notes are stored in your browser's local storage. MiOffice servers never receive, store, or process your note content. There is no database of user notes to hack or subpoena.

What encryption is used?

WebRTC uses DTLS (Datagram Transport Layer Security) for the data channel, providing end-to-end encryption between peers. The encryption keys are negotiated directly between browsers.

What happens if I lose my device?

Since notes are stored locally, losing your device means losing your notes unless you have shared them to another device via P2P. For critical notes, share a P2P link with yourself on a second device as a backup.

Is this HIPAA compliant?

MiOffice Notes exceeds HIPAA requirements by design — no PHI is ever stored on or transmitted through our servers. However, HIPAA compliance also depends on your device security (screen lock, disk encryption).

Can law enforcement access my notes?

MiOffice has nothing to hand over. We do not store your notes, do not have encryption keys, and do not even know you used the service. Notes exist only on your device.

Private Notes App — E2E Encrypted, Zero Server Storage

Try it free — no signup required

Private Notes — Zero Server Storage

What "Private" Actually Means

How to Use Private Notes

Open MiOffice Notes

Write Your Private Notes

Share Securely (Optional)