sine~sync

Encrypted memory for AI

with zero-knowledge encryption

Sync AI memories and embeddings across all your devices. Your context stays private—we never see your data.

Runs on

macOS Windows Linux

Works with

Claude Code OpenAI Codex Cursor claude-mem Built-in Memory
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Free tier included. No credit card required.

How it works

Give your AI assistants persistent memory that follows you across devices—securely.

Your Memories Stay Private

AI memories contain sensitive context. Your encryption key never leaves your device—we can't read your data.

Your keys, your data

sine~sync uses Argon2id key derivation (64MB memory, 3 iterations) and AES-256-GCM encryption. The same standards trusted by password managers.

✓ We cannot read your synced data
✓ We cannot reset your password
✓ Server breach reveals only encrypted blobs
✓ We can't decrypt your data - we never have your keys
Important: If you lose your password OR secret key, your data is inaccessible. Save your secret key securely.
Your Device
Master Password + Secret Key
↓
Argon2id 64MB memory, 3 iterations
↓
256-bit Encryption Key
↓
AES-256-GCM Encryption
↓
Encrypted Blob → Cloud

Give your AI a secure memory

Start syncing AI memories across devices. Free forever, no credit card.

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