Privacy Policy 隐私政策 プライバシーポリシー 개인정보 처리방침

Information We Collect

1. Information You Provide

When you use Dayry, you may provide the following information, which is stored locally on your device only:

• Event Data: Event titles, target dates, repeat rules, display preferences, and reminder settings
• Widget Preferences: Selected events and template choices for home screen widgets
• Birthday Information: Birthdates you choose to save

2. Information Automatically Collected

Dayry uses Firebase Analytics to collect limited anonymous usage data to help us improve the app. This includes:

• Usage Analytics: Anonymous app usage statistics (e.g., feature usage, app crashes)
• Device Information: Device model, OS version, app version (for crash diagnosis)
• Advertising ID: Used to serve personalized ads through Google AdMob

Dayry does NOT collect:

• Location data
• Personal event data or countdown information
• Any data you create within the app

3. Permissions

Dayry requests the following permissions:

• Notifications (POST_NOTIFICATIONS): Required to send you reminders for your events. Notifications are generated locally on your device using Android's WorkManager.
• Internet (INTERNET): Required for loading ads through Google AdMob and for Firebase Analytics/Crashlytics to function properly.
• Network State (ACCESS_NETWORK_STATE): Required to check network availability for ad loading and analytics.

How We Use Your Information

We use your information for the following purposes:

On Your Device (Local Use)

• Display and manage your events and countdowns
• Calculate days remaining/elapsed for your events
• Send local notifications for event reminders
• Render home screen widgets with your selected events
• Provide holiday information for selected countries (pre-loaded, offline data)

Analytics and Advertising

• App Improvement: Firebase Analytics helps us understand how users interact with the app
• Crash Diagnosis: Firebase Crashlytics helps us identify and fix bugs
• Advertising: Google AdMob displays ads to support the free version of the app

We do not use your personal event data for:

• Selling to third parties
• Sharing with advertisers beyond what is necessary for ad serving
• Any purpose unrelated to app functionality

Data Sharing and Disclosure

Your personal event data (countdowns, reminders, etc.) is never shared with third parties.

However, we do share limited technical information with the following third parties:

Google LLC

• Firebase Analytics: Anonymous usage statistics
• Firebase Crashlytics: Anonymous crash reports
• Google AdMob: Advertising ID and device info for ad serving

Google's use of information collected through these services is governed by Google's Privacy Policy.

We do not use:

• Social media integration
• Cloud backup or synchronization services for your event data

Data Security

We implement appropriate technical security measures to protect your personal information:

• Local Storage: All your event data is stored locally using Android's Room database and DataStore Preferences
• Device Encryption: Data is encrypted when your device is locked (using Android's device encryption)
• Secure Transmission: All communications with Firebase and AdMob use encrypted HTTPS connections
• Data Minimization: We only transmit data necessary for analytics and advertising

Data Retention

Your data is retained on your device until you:

• Delete individual events within the app
• Clear the app's data through Android settings
• Uninstall the application

You have full control over your data at all times. We do not retain copies of your data on any servers.

Children's Privacy

Dayry is suitable for users of all ages and does not knowingly collect personal information from children under 13. Since we do not collect or transmit any personal information externally, our service does not pose privacy risks to children.

Parents and guardians should note that:

• All data remains on the device
• No registration or account creation is required
• No external communications are made by the app

Your Rights and Choices

Under data protection laws, you have the following rights regarding your data:

• Access: You can view all your events and data within the app at any time
• Deletion: You can delete individual events or clear all app data through Android Settings
• Modification: You can edit or update any event information within the app
• Data Portability: Your data is stored locally in standard Android databases. You can access it through Android's built-in backup/restore features
• Opt-Out: You can revoke notification permissions at any time through Android Settings

Changes to This Privacy Policy

We may update this Privacy Policy from time to time. We will notify you of any changes by:

• Posting the new Privacy Policy within the app
• Updating the "Last Updated" date at the top of this policy

Your continued use of the app after any modifications indicates your acceptance of the updated Privacy Policy.

Third-Party Services

Dayry integrates with the following third-party services:

Google Firebase

We use Google Firebase for the following services:

• Firebase Analytics: Collects anonymous usage data to help us understand how users interact with the app and improve its features. For more information, see Google's Privacy Policy.
• Firebase Crashlytics: Collects crash reports to help us identify and fix issues. Crash reports are anonymous and do not contain any of your event data.

Google AdMob

We use Google AdMob to display advertisements within the app. AdMob may collect and use information about you to serve personalized ads based on your interests. This may include:

• Device information (model, OS version)
• Advertising ID (for personalized ads)
• General location information (country/region level)

You can opt out of personalized advertising by:

• Going to your device Settings → Google → Ads → Opt out of Ads Personalization
• Or visiting Google Ads Settings

For more information about how Google uses data for ads, see Google's Privacy Policy.

Other Third-Party Libraries

The following third-party libraries are used exclusively for app functionality and do not transmit your personal data:

• Google Play Services (In-App Review): Allows you to optionally rate and review the app on Google Play
• Android Jetpack Libraries: Room (local database), DataStore (local preferences), WorkManager (local notification scheduling), Glance (widget rendering)
• Coil: Local image loading for app resources
• Lottie: Local animation rendering
• Gson: JSON parsing for pre-loaded holiday data files stored within the app

International Data Transfers

Since Dayry does not transmit any data to external servers or services, no international data transfers occur. All data remains stored locally on your device within your jurisdiction.

Legal Basis for Processing (for Users in the European Economic Area)

For users in the EEA, our legal basis for processing your personal information is:

• Contract Necessity: Processing is necessary to provide the app's core functionality (event management, reminders, widgets)
• Consent: You consent to local notification delivery for event reminders

Since all data is stored locally and processed on your device, our data processing practices inherently minimize privacy risks and comply with GDPR principles of data minimization and privacy by design.

Accessibility Statement

This Privacy Policy is maintained in English and is available within the Dayry application and on our Google Play Store listing. If you require this policy in an alternative format or language, please contact us using the information above.