Privacy Policy

Last updated: August 5, 2026

Yuri Beppu ("the Developer") provides this Privacy Policy ("this Policy") to explain how user information is handled in the iOS application "Lock in" ("the App").

1. Our Approach

The App is a tool that helps users manage their own smartphone usage. The Developer collects the minimum information necessary to operate the App.

The App does not serve advertisements, perform behavioral targeting, or track users. No advertising SDK, analytics SDK, or crash reporting SDK is included in the App.

2. Information That Stays on Your Device

The following information is stored and processed only on your device and within its App Group. It is never transmitted to the Developer or to any third party.

• Screen Time information, including app usage and usage duration
• The apps you have selected to restrict
• Your block settings and their status
• Records calculated within the App, such as "time reclaimed"
• Information you enter during onboarding, such as usage hours and age
• Your notification preferences

The App uses Apple's Family Controls and DeviceActivity frameworks. By Apple's design, these frameworks do not allow an app to extract detailed usage data, and no such information leaves your device.

3. Information Transmitted Externally

The App uses services provided by RevenueCat, Inc. (United States) to manage in-app purchases. In connection with purchase functionality, the following information is transmitted to RevenueCat's servers.

3.1 Identifiers

• An anonymous user ID generated automatically by the RevenueCat SDK
• IDFV (Identifier for Vendor), which is shared only among apps from the same developer and is not shared with other companies' apps

The App does not use the advertising identifier (IDFA) and does not request App Tracking Transparency permission.

3.2 Purchase Information

• App Store receipts and transaction information
• Product identifiers, prices, and currencies of purchased items

3.3 Device Information

• Device model
• iOS version
• The App's bundle identifier and version
• Language and locale settings
• Time zone
• SDK version

3.4 Information Recorded Through Network Communication

• The IP address from which the request originates

4. Purpose of Use

The information described in Section 3 is used solely for the following purposes.

• To determine subscription and one-time purchase status and provide the corresponding features
• To restore purchases, for example after changing devices or reinstalling the App
• To determine free trial eligibility and status
• To investigate and resolve issues related to purchases

The Developer does not use this information beyond these purposes.

5. Disclosure to Third Parties

Except as required by law, the Developer does not sell, rent, or disclose user information to third parties.

The information described in Section 3 is transmitted to RevenueCat, Inc. only to the extent necessary to manage in-app purchases. For details on how RevenueCat handles personal information, please refer to their privacy policy.

• RevenueCat Privacy Policy: https://www.revenuecat.com/privacy/

Payment processing for in-app purchases is handled by Apple Inc. Payment information, such as credit card details, is managed by Apple and is never accessible to the Developer.

6. Retention and Deletion

Information stored on your device is deleted when you uninstall the App.

If you wish to have purchase information transmitted to RevenueCat deleted, please contact us using the details in Section 9. Please note that certain purchase records may need to be retained as required by Apple or by applicable law.

7. Children's Privacy

The App is not directed to children under the age of 13. The Developer does not knowingly collect personal information from children under 13.

Minors should use the App, and make any in-app purchases, only with the consent of a parent or guardian.

8. Your Rights

You may request access to, correction of, restriction of the use of, or deletion of your information held by the Developer. Please contact us using the details in Section 9.

If you reside in the European Economic Area, the United Kingdom, or California, you have rights under applicable laws such as the GDPR, UK GDPR, and CCPA. To exercise these rights, please use the same contact details.

For users in the EEA and the UK, the legal basis for processing the information described in Section 3 is the performance of a contract, namely providing and managing the purchases you have made.

9. Contact

For questions about this Policy, or to exercise your rights, please contact us at:

• Operator: Yuri Beppu
• Email: lockincontact044@gmail.com

10. Changes to This Policy

The Developer may update this Policy in response to changes in law or changes to the App's functionality. If a significant change is made, we will provide notice within the App or through its release notes.

The updated Policy takes effect when it is posted on this page.

11. Governing Law

This Policy is governed by and construed in accordance with the laws of Japan.