The Spatial Workspace for
Your Thoughts.

End-to-end encrypted notes, tasks, and real-time collaboration wrapped in a stunning, physics-based interface.

A new dimension of productivity.

Everything you need, secured by default.

Zero-Knowledge Encryption

Your master key never leaves your device. We couldn't read your notes even if we wanted to.

Live Presence

Invite your team to workspaces. See their cursors and avatars typing in real-time.

Home Screen Widgets

Stay on top of your tasks and notes right from your iOS or Android home screen.

Vault Auto-Lock

Step away with peace of mind. QuillFox automatically drops your decryption keys after inactivity.

Reminders & Folders

Organize everything into private folders and set push notifications for due dates.

Designed for those who demand privacy.

Whether you're a developer documenting code, a founder drafting business plans, or a team collaborating on sensitive projects, QuillFox provides the tools you need without compromising your data.

  • Rich Text & Markdown

    Write beautifully formatted notes with embedded code blocks, tables, and images.

  • Workspaces

    Organize your life into distinct vaults. Share specific workspaces with your team.

Trusted by professionals.

Don't just take our word for it.

"As a journalist covering sensitive topics, I can't rely on standard cloud providers. QuillFox's local-first zero-knowledge approach ensures that even under a subpoena, nobody can read my drafts."

Elena Rostova

Investigative Reporter

"Our law firm handles thousands of confidential M&A documents. Switching to QuillFox gave us peace of mind; the E2EE workspaces perfectly meet our strict data privacy compliance standards."

David Sterling, Esq.

Partner, Sterling Legal

"I audited the client-side encryption code myself before moving my personal journal here. The PBKDF2 key derivation and AES-GCM implementation is textbook perfect. Truly zero-knowledge."

Alex Chen

Security Researcher

Pricing built for scale.

Free

$0
  • 2 Active Devices
  • 2 Collaborators
  • Max 2 notes with attachments
  • 5MB max per attachment
MOST POPULAR

Premium

$7/mo
  • 3 Active Devices
  • 15 Collaborators
  • Unlimited attachments
  • Priority features

Ultra

$17/mo
  • 5 Active Devices
  • 35 Collaborators
  • Priority Support
  • Custom Themes

Frequently Asked Questions.

Can TechyDez read my notes?

Absolutely not. QuillFox uses Zero-Knowledge End-to-End Encryption. Your data is encrypted on your device before it ever reaches our servers. Without your master password, your data looks like random gibberish to us.

What happens if I lose my master password?

Because we don't store your master password, we cannot recover it for you. If you lose it, your encrypted data will be unrecoverable. We highly recommend using a password manager.

How does Real-time Collaboration work with E2EE?

When you invite a collaborator to a workspace, QuillFox securely encrypts the workspace's symmetric key using their public key. This ensures only invited users can decrypt and read the workspace contents.

Can I upgrade or downgrade my plan later?

Yes! You can upgrade to Premium or Ultra at any time from the Settings menu. If you downgrade to Free, your extra workspaces will be archived, but you will not lose your data.