Security & Privacy

Kizu is designed with privacy at its core. Your photos are never used for AI training, never scanned for ads, and never shared with third parties.

Authentication

Kizu uses code-based authentication — no passwords to remember or leak:

• 5-digit verification codes sent to your email or phone
• Codes expire after 10 minutes
• No passwords stored anywhere
• Verification codes autofill from iOS Mail, Gmail, Outlook, and the SMS keyboard suggestion bar so you usually don't need to type them in by hand

You can also sign up directly from a QR-code invite using just your phone number — Kizu sends you a verification SMS and signs you in once you tap the link.

Biometric Authentication

Add an extra layer of security with Face ID or Touch ID:

1. Go to Account > Biometric Authentication
2. Enable Face ID or Touch ID
3. The app requires biometric verification to open

Device Management

View and control which devices have access to your account:

• See all connected devices and active sessions
• View last active time for each device
• Revoke access for devices you no longer use
• Manage session tokens

Privacy Principles

• 🔒 No Ads, Ever — We never show ads or monetize your data
• 🔍 No AI Training — Your photos are never used to train external AI models
• 🏠 No Tracking — No tracking pixels, no third-party analytics, no behavior profiling
• 🔐 Secure Transit — All data transmitted over HTTPS/TLS encryption

AI Privacy

Kizu uses AI for face recognition, object detection, smart search, and creating Moments. All processing happens on Kizu's private servers:

• Your photos are never sent to Google, OpenAI, or any third-party AI service
• Face recognition data stays within your account
• AI models run on our own infrastructure, not shared cloud services

Sharing Security

• Shared album links expire after 7 days
• Circle invitations require explicit acceptance
• Role-based access control (Viewer, Contributor, Editor, Admin)
• Block and unblock users at any time
• Revoke any shared link instantly

Data Control

• Export anytime — download your entire library in standard formats
• Delete your account — removes all data permanently
• Email unsubscribe — one-click unsubscribe from any notification email
• Notification preferences — granular control over push and email notifications

Exporting Your Data

Download all your photos, albums, and memories:

1. Go to Settings > Export Data
2. Choose what to include
3. Start the export
4. Receive the download via email when ready

Your data is exported in standard formats (JPEG, PNG, JSON) — no proprietary lock-in.