Kyosuke Watanabe (hereinafter referred to as "we", "our", or "us") establishes this Privacy Policy (hereinafter "this Policy") regarding the handling of user information in the application "Roo Timer" (hereinafter "this App").

1. Information We Collect

This App does not collect any personally identifiable information. Timer settings (such as work duration, rest duration, number of sets) and display preferences are stored only on the user's device and are not transmitted to our servers.

2. Future Implementation of Advertising

We may introduce in-app advertisements (e.g., Google AdMob) in the future. If advertising is implemented, the following information may be sent to advertising providers for the purpose of ad delivery, fraud prevention, and analytics:

• Device identifiers, IP address, estimated location, and information about pages viewed and interactions within the app.
• No tracking-related data will be shared without user consent in accordance with iOS’s App Tracking Transparency (ATT). Specific data recipients, data categories, and settings for obtaining consent will be clearly indicated in this Policy at the time of introduction.

3. Purpose of Use

We use the collected information for the following purposes:

1. To provide, maintain, protect, and improve this App.
2. To respond to user inquiries.
3. For troubleshooting, statistical analysis, and advertisement delivery.
4. To comply with applicable laws and terms of service.

4. Data Transmission and Third-Party Sharing

• Except for the aforementioned optional features, no user information is sent to our servers or shared with third parties.
• When using external services, only the minimum necessary data will be shared with service providers, in accordance with each provider’s privacy policy regarding the purpose, data items, and recipients.

5. Data Retention

App-related data stored on the device will remain until the user uninstalls the app. Inquiry-related information will be retained only for as long as necessary to fulfill legal obligations and will be securely deleted thereafter. Retention periods for analytics and advertisement data depend on each service provider’s policy.

6. Security Measures

We implement reasonable security measures—such as access controls, encryption, and minimal access privileges—to protect collected data from leakage, loss, or damage. If we outsource any part of the operation, we ensure proper supervision of the contractors.