Privacy & security

another.money is built so that your financial data stays yours. The short version: it lives on your device, encrypted with your password, and nothing is uploaded just to use the app.

Local-first

• No sign-up, no account, no email required to use the app.
• Your book is a single file stored on your device.
• The app works fully offline.

Encryption

• Each book is encrypted at rest with a key derived from your password using

a strong, memory-hard key-derivation function (Argon2id).

• On supported devices you can unlock with biometrics (Face ID / fingerprint)

instead of typing the password each time.

• Because the key comes from your password, we can't recover a lost password —

there's no backdoor. Keep your password safe and keep a backup of your book.

Sharing stays end-to-end encrypted

If you turn on collaboration:

• Changes are encrypted on your device before they leave it, and only the

devices that hold the book password can decrypt them.

• The sync relay stores and forwards ciphertext only — it cannot read your

accounts, balances, payees, or notes.

What leaves your device

• Nothing, for a local-only book.
• For a shared book: encrypted change-data to the sync relay, plus the minimum

metadata needed to route it. No analytics or tracking of your finances.

Backups

Your Back up export is a JSON file you control. Store it somewhere safe (it contains your data) — and remember it's the only way back if you lose your device or password.

Have a security question or want to report an issue? See the FAQ for how to get in touch.