Last updated: January 2026

This Privacy Policy explains how we collect, use, store, and protect your information when you use this application (the “死んだ？"). By using the App, you agree to the collection and use of information in accordance with this policy.

1. Information We Collect

1.1 Information You Provide

We collect the following information when you use the App:

• Email Address: Used as an emergency contact email and for essential functional notifications.
• Display Name: A user-defined name used for in-app display and communication purposes.

When you first open the App, you are required to provide the above information in order to use the core features of the App.

1.2 Automatically Generated Information

• User ID: The App automatically generates a unique user identifier when you first use the App. This identifier is used to associate your information and app activity with your account.
• Check-in Timestamps: The App records timestamps related to automatic check-in events (for example, when a check-in is completed).

1.3 Health & Fitness Data

The App may access step count data on your device to determine whether you have completed an automatic check-in.

• Step count data is processed locally on your device only.
• The App checks whether your steps exceed a defined threshold within a recent time period.
• Actual step count values are not uploaded or stored on our servers.

Only the resulting check-in status and timestamp may be stored.