Privacy Policy

Last updated: April 13, 2026

crelve ("we", "us", or "our") operates the mobile application "MangaTrack" ("App"). This Privacy Policy explains how we collect, use, and protect your information.

Section 1. Information We Collect

1.1 Information Stored Locally

The following data is stored on your device using Hive local storage and is not transmitted to our servers:

• Manga series information (titles, authors, publishers, volume counts)
• Volume details (ISBN, purchase date, price, format)
• Reading progress and completion status
• App preferences and settings

1.2 Information Collected Automatically

We collect the following information through third-party services:

• App usage analytics (via Firebase Analytics)
• Crash reports and performance data (via Firebase Crashlytics)
• Anonymous user identifier (via Firebase Authentication)

1.3 Third-Party Services

The App uses the following third-party services, each with their own privacy policies:

• Firebase Analytics - App usage analytics
• Firebase Crashlytics - Crash reporting
• Firebase Authentication - Anonymous user authentication
• Firebase App Check - App integrity verification
• Google AdMob - Advertisement delivery
• RevenueCat - Subscription management

Section 2. How We Use Your Information

We use collected information for the following purposes:

• To provide and maintain the App
• To improve the App and user experience
• To deliver relevant advertisements
• To manage subscriptions and in-app purchases
• To detect and prevent technical issues

Section 3. Data Storage and Security

Your manga collection data is stored locally on your device. We do not store your personal collection data on our servers. Analytics and crash data are stored on Firebase servers operated by Google, subject to Google's data security practices.

Section 4. Data Sharing

We do not sell, trade, or rent your personal information to third parties. We may share anonymized analytics data with the third-party services listed in Section 1.3 for the purposes described in Section 2.

Section 5. Children's Privacy

The App does not knowingly collect personal information from children under 13. If you believe a child has provided us with personal information, please contact us and we will take steps to remove such information.

Section 6. Your Rights

You have the right to:

• Delete your local data by uninstalling the App
• Opt out of personalized advertising through your device settings
• Request deletion of any analytics data associated with your device

Section 7. Changes to This Policy

We may update this Privacy Policy from time to time. We will notify you of any changes by posting the new Privacy Policy in the App.