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Privacy Policy

Effective Date: March 17, 2026

This Privacy Policy explains how Kizuki (“we,” “our,” or “us”) collects, uses, and protects your information when you use our application. By using Kizuki, you agree to the practices described in this policy.

1. Data We Collect

We do not collect or store personal data like your name, email address, or IP address. However, certain information is collected automatically to improve the app's functionality and performance. This includes:

  • Crash logs (via Apple and Google diagnostics tools)
  • App usage data (via PostHog)
  • Device information (such as device model, OS version, and language settings)
  • Subscription status (via RevenueCat)

2. How We Use Your Data

We use this information to:

  • Monitor app performance
  • Diagnose bugs or crashes
  • Understand general user behavior (e.g., time spent in app, feature usage)
  • Manage subscription experiences through RevenueCat

All analytics data is anonymized and is never used for advertising or sold to third parties.

3. Third-Party Services

We rely on the following third-party tools to operate the app:

  • Apple App Store & Google Play Store — for purchases and distribution
  • RevenueCat — to manage subscriptions and entitlements
  • PostHog (Cloud) — for product analytics and feature usage

These providers may collect anonymized data according to their own privacy practices. No personally identifiable information is intentionally transmitted.

4. Emotional Data

Kizuki helps you track and reflect on your emotions. Any emotional check-in data is stored locally on your device and is not transmitted to our servers or any third party.

5. Your Privacy Controls

Since no user accounts are created, there is no user profile to delete. However, if you wish to request the deletion of analytics data associated with your device, contact us at: hello@kizuki.app

We will process your request and delete any identifiable analytics data stored via PostHog.

6. Children's Privacy

We do not knowingly collect personal information from children under the age of 13. If we become aware of unintentional data collection from a child, we will delete it promptly.

7. Changes to This Policy

We may update this Privacy Policy from time to time. Any changes will be reflected with a new “Effective Date” at the top of this page. Continued use of the app after changes go into effect constitutes your acceptance of the updated policy.

8. Contact

If you have any questions about this policy or your data, reach out to us at: hello@kizuki.app