Privacy Policy
Last updated: April 29, 2026
monojp / MITSUKO ONO (“we,” “us,” or “our”) has established this Privacy Policy (“Policy”) regarding the handling of user information, including personal information, in the app “LunaCycle” (“App”).
1. Information We Handle
We may handle the following information in this App.
1-1. Information entered by users in the App
- Period start and end dates
- Cycle length and period length
- Logged flow, symptoms, and notes
- Reminder settings
- Custom symptom items
- In-app settings such as language, appearance, display options, and app lock settings
1-2. Information collected when you contact us
When you contact us, we may receive information such as your email address and the content of your inquiry.
1-3. Information collected by third-party service providers for advertising and service improvement
This App uses third-party services for advertising. As a result, advertising identifiers, device information, IP address, approximate location, ad-related data, and usage-related data may be collected by such third-party service providers.
2. Where Your Data Is Stored
The period records, symptoms, notes, reminder settings, and various settings entered by users in this App are primarily stored on the user’s device.
We do not collect or automatically transmit the record content entered in the App to our own servers for storage purposes.
However, third-party service providers used in the App, such as advertising services, may collect information as necessary for their services.
3. Backup and Restore
This App provides backup and restore features for user records and settings.
If a user creates a backup, the backup file may contain record data, reminder settings, symptom settings, and other major settings managed in the App.
Users are responsible for the management, storage, sharing, and transfer of their backup files.
4. App Lock Feature
This App may provide an app lock feature using Face ID, Touch ID, or the device passcode.
Biometric authentication and device authentication are processed on the device using authentication features provided by Apple. We do not obtain or store users’ facial data, fingerprint data, or device passcodes.
5. Purposes of Use
We use the information we handle for the following purposes:
- To provide and operate the App
- To provide features such as period prediction, history display, analysis display, and reminders
- To save user settings and improve convenience
- To provide backup and restore features
- To respond to inquiries
- To deliver and optimize advertisements
- To improve the App, fix issues, and enhance quality
- For purposes incidental to the above
6. Provision to Third Parties
Except where required by law, we do not provide personal information to third parties without the user’s consent.
However, this does not apply in the following cases:
- When third-party service providers handle information to the extent necessary to provide functions requested by the user
- When disclosure is required by law
7. Third-Party Services
This App may use the following third-party service:
- AdMob (Google LLC and related entities)
These third-party service providers may collect and use information in accordance with their own privacy policies.
8. Disclosure, Correction, and Deletion of Personal Information
If a user wishes to request disclosure, correction, or deletion of personal information we hold, please contact us using the contact information below. We will respond appropriately in accordance with applicable laws after verifying your identity.
9. Use by Minors
If minors use this App, they should do so with the consent of a parent or legal guardian where necessary.
10. Changes to This Privacy Policy
We may update this Policy as necessary due to legal changes, feature changes in the App, or other reasons.
Any revised Privacy Policy will become effective when posted on our website or otherwise made available through an appropriate method.
11. Disclaimer
We strive to provide accurate information and functionality in this App as much as possible. However, period predictions, ovulation predictions, analysis results, and reminders provided by this App are for reference only and are not intended to provide medical advice, diagnosis, or treatment.
To the extent permitted by law, we are not responsible for any damages arising from the use of this App.
12. Contact
For inquiries regarding our handling of personal information, please contact us through the inquiry form.