Privacy Policy

Established: July 7, 2026 / Last updated: July 14, 2026 (added the In-App Purchases section)

shikakuLog does not collect personal information such as your name or email address. Your data, including the certifications you register, is stored only on your device. Only when you use in-app purchases is the information needed to verify your purchase processed (see Section 4, In-App Purchases).

1. About the Developer

shikakuLog (the “App”) is a certification management app developed and operated by an individual developer (the “Developer”).

2. Information We Collect

The App does not collect personal information such as your name, email address, or location. No account registration is required.

Information you enter into the App (certification names, dates, notes, etc.) is stored only in a database on your device and is never sent to the Developer or any other external party.

3. Data Transmission and Third Parties

The certification and study data you enter is never sent to external servers (the App works offline).
Your information is never shared with third parties.
The App uses no analytics tools or advertising services (if this changes, this policy will be revised and the change announced).

4. In-App Purchases

Purchases of the App's premium features (in-app purchases) are processed by Apple (App Store). The Developer never has access to your payment information, such as credit card details.

To verify purchase status (receipt validation), the App uses services provided by RevenueCat, Inc. In this process, purchase history, receipt information, and anonymous identifiers are handled on RevenueCat's servers. This data is not linked to personal information such as your name or email address, and is not used for tracking (following you across other companies' apps or websites).

For details, see the RevenueCat Privacy Policy.

5. Notifications

The App's notifications (reminders for certification expiration dates and exam dates) are local notifications handled entirely on your device. Notifications require your permission, which you can change at any time in iOS Settings.

6. Data Backup

The App's export feature writes your data to a file at your request. You are responsible for where the exported file is stored and with whom it is shared.

7. Data Deletion

Because the App's data is stored only on your device, deleting the App deletes all of its data.

8. Changes to This Policy

This policy may be revised in response to legal changes or new features. Significant changes will be announced on this page.

9. Contact

For questions about this policy, please contact us at:

Email: shikakulog@gmail.com