Zero-Knowledge Architecture

Your files.
Your keys.
Your rules.

End-to-end encrypted cloud storage where even we can't see your data. No backdoors. No compromises. Ever.

How It Works

Encryption happens on your device

Your passphrase never leaves your device. We derive keys locally, encrypt locally, and only send ciphertext to our servers. We are architecturally blind to your data.

Your Device
Encrypted
Our Server
Ciphertext
Cloud Provider
Features

Privacy without trade-offs

Military-grade cryptography meets modern cloud storage. Fast uploads, seamless sharing, and zero compromises on security.

Zero-Knowledge Encryption

XChaCha20-Poly1305 encryption with Argon2id key derivation. Your passphrase is never transmitted or stored.

Provider Agnostic

Store on AWS S3, Cloudflare R2, Backblaze B2, or MinIO. Switch providers anytime — no vendor lock-in.

Chunked Uploads

Files split into 4 MiB encrypted chunks for parallel uploads, resumable transfers, and efficient bandwidth use.

Secure Sharing

Share files with X25519 key agreement. Recipients decrypt with their own keys — we never see the content.

Cross-Platform

Web app now, desktop (Tauri) and mobile (React Native) coming soon. Your encrypted vault, everywhere.

Open Source

Client code is fully open source. Every cryptographic operation is auditable. Trust is verified, not assumed.

Security

What we can and cannot do

Transparency isn't a feature — it's a requirement. Here's exactly what our architecture makes possible, and what it makes impossible.

Read your files
Delete your account data
Know what you store
Respond to metadata subpoenas
Decrypt files for law enforcement
Ban accounts for ToS violations
Implement backdoorsNEVER
Publish transparency reports
Cryptography

Built on proven primitives

No custom cryptography. No security through obscurity. Every algorithm is an industry standard, independently auditable.

Key Derivation

Argon2id

Memory-hard, GPU-resistant

Symmetric Encryption

XChaCha20-Poly1305

256-bit, AEAD

Key Agreement

X25519 + HKDF

Elliptic curve Diffie-Hellman

Hashing

BLAKE3

Faster than SHA-256, equally secure

Pricing

Simple, honest pricing

No hidden fees. No data mining. You pay for storage, not for us to exploit your data.

Free

5 GB encrypted storage

$0
  • Zero-knowledge encryption
  • Web & desktop apps
  • 1 storage provider
  • Community support
Most Popular

Pro

200 GB encrypted storage

$8/mo
  • Everything in Free
  • Multiple storage providers
  • Priority support
  • Secure sharing
  • File versioning

Team

2 TB encrypted storage

$16/user/mo
  • Everything in Pro
  • Team vaults
  • Admin controls
  • Audit logs
  • SSO integration
  • Self-host option
FAQ

Common questions

Everything you need to know before trusting us with your files.

Early Access

Get early access

Join the waitlist for early access. We'll never share your email — that would be ironic.