ZK Terms of Use

Last updated: 4 November 2026 โ€” beta

Beta software

ZK is in beta. It may have bugs, messages may be delayed or lost, and data may be lost. Do not rely on it for critical or emergency communication, and keep backups of your identity and chats.

Your account

Your identity is a cryptographic key on your own device. We have no way to recover your account, reset a backup passphrase, or access your messages. Keeping your device, backup, and passphrase safe is your responsibility.

Acceptable use

We cannot see message content, so we do not moderate content; we may restrict a PeerID's access to relays we operate in case of technical abuse. Users can block unwanted contacts in the app.

Infrastructure

Relays and mailboxes are provided without an availability guarantee and may change or be temporarily unavailable. Undelivered encrypted messages are deleted after 72 hours.

No warranty

ZK is provided "as is", without warranties of any kind. To the extent permitted by law, we are not liable for damages arising from use of, or inability to use, the service.

Changes

These terms may change; the current version is always on this page with its date at the top.

Contact

support@zkim.app