Privacy Policy

Last updated: September 18, 2025

Summary

  • No account, no cloud sync — your data stays on your device.
  • No ads and no third‑party trackers.
  • Optional in‑app purchases are processed by Apple and Google; we never see your payment details.

Data Collection

Keizoku is designed with privacy in mind. Your habit data is stored locally on your device and is not transmitted to our servers. We do not collect, store, or have access to your personal habit tracking information.

Data We Do Not Collect

We do not collect or request:

  • Personal identifiers (name, email address, phone number)
  • Contacts, calendars, photos, camera, microphone, precise location
  • Health or fitness data
  • Device advertising identifiers

Analytics and Crash Reporting

We do not use third‑party analytics or advertising SDKs. If you have opted in at the OS level, Apple and Google may provide us with anonymized, aggregated crash and performance reports. These reports can include information such as device model, operating system version, and anonymized crash traces, and cannot be used to identify you.

In-App Purchases

Keizoku offers premium features through in‑app purchases processed by Apple and Google. We never store or have access to your payment information. We use RevenueCat to manage subscriptions and entitlements. RevenueCat may process purchase metadata (such as a non‑personal identifier, product identifier, and transaction timestamps) strictly to validate your purchase and enable premium features, subject to their privacy policy.

RevenueCat privacy policy: https://www.revenuecat.com/privacy

Data Sharing and Sale

We do not sell your data. We do not share personal data with third parties. The only third‑party processing relates to purchases as described above.

Data Security

Since your data stays on your device, you maintain full control over your information. We recommend using your device's built-in backup features (iCloud, Google Backup) to prevent data loss.

Data Retention and Deletion

Your habit data remains on your device until you delete it. To remove your data, you can delete the Keizoku app or clear its storage from your device settings. We do not keep copies of your habit data on any server.

Purchase records are maintained by Apple and Google for billing and anti‑fraud. We cannot delete those records, but you can manage your purchase history via your Apple ID or Google account.

Children’s Privacy

Keizoku is not directed to children under 13. We do not knowingly collect personal information from children. If you believe a child has provided us information, please contact us and we will delete it.

Contact Information

If you have any questions about this Privacy Policy, please contact us at:

Email: support@keizoku.app

Your Privacy Rights (GDPR/UK GDPR)

Depending on your location, you may have rights such as access, correction, deletion, and portability. Because we do not collect or store personal data from your use of the app, there is generally nothing for us to provide or delete. If you contact us by email, you can request deletion of that correspondence at any time.

Changes to This Policy

We may update our Privacy Policy from time to time. We will notify users of any changes by posting the new Privacy Policy on this page and updating the "Last updated" date.