Privacy Policy

1. Introduction

Welcome to Piano Notes Master. We respect your privacy and are committed to protecting your personal data. This privacy policy will inform you about how we look after your personal data when you visit our website and tell you about your privacy rights and how the law protects you.

This privacy policy applies to all users of Piano Notes Master, including the website and mobile applications.

2. Information We Collect

We collect several types of information from and about users of our platform:

• Account Information: When you register, we collect your email address and encrypt your password. If you sign in with Google, we receive information from your Google account based on your Google privacy settings.
• Profile Information: We collect your username if you choose to provide one.
• Device Information: We collect a device identifier to prevent abuse of our service. This identifier is created using browser fingerprinting technology.
• Usage Data: We collect information about how you use our platform, including your performance in piano note recognition exercises, such as accuracy, response times, and overall scores.
• Local Storage Data: We use your browser's local storage to save preferences like audio settings, UI preferences, and game options.

3. How We Use Your Information

We use your information for the following purposes:

• To create and manage your account, and to provide our services to you.
• To personalize your learning experience with adaptive learning content based on your performance.
• To manage your spaced repetition learning schedule for optimal note memorization.
• To process payments and maintain your subscription.
• To prevent abuse, including limiting multiple account creation from the same device.
• To analyze usage patterns and improve our platform.
• To maintain leaderboards (if you've opted to appear on them).
• To comply with legal obligations.

4. Device Fingerprinting and Fraud Prevention

We use device fingerprinting technology to create a unique identifier for your device. This helps us prevent abuse of our service, such as creating multiple accounts to extend free trials or bypass restrictions.

We monitor account creation patterns and may implement temporary cooling-off periods for devices that create multiple accounts in a short period. This data is used solely for service protection purposes.

If you delete your account, we retain certain information for a period of 90 days to prevent immediate re-registration, after which this information is permanently deleted.

5. Local Storage and Cookies

We use local storage to save your preferences and settings, such as:

• Audio settings (sound enabled/disabled, background music, volume levels)
• User interface preferences (piano key labels, marker dots, etc.)
• Game settings (time limits, display options)

This information is stored locally on your device and is not transmitted to our servers.

We use Firebase for authentication and database services, which may use session cookies for authentication purposes. These cookies are essential for the functioning of our service.

6. Data Sharing and Disclosure

We may share your personal information with:

• Firebase (Google), which provides our authentication and database infrastructure.
• Payment processors, for handling purchases (payment information never passes through our servers).

We do not sell your personal information to third parties or share it for advertising purposes.

7. Data Security

We have implemented appropriate security measures to prevent your personal data from being accidentally lost, used, or accessed in an unauthorized way, altered, or disclosed.

We limit access to your personal data to those employees, agents, contractors, and other third parties who have a business need to know.

8. Data Retention

We will retain your personal data only for as long as necessary to fulfill the purposes we collected it for, including for the purposes of satisfying any legal requirements.

If you delete your account, we retain certain information (such as email address) for 90 days to prevent abuse and immediate re-registration. After this period, all personal data is permanently deleted, except for anonymized usage statistics.

Performance data and statistics may be kept in an anonymized form for analytical purposes.

9. Your Rights

Under certain circumstances, you have rights under data protection laws in relation to your personal data, including the right to:

• Request access to your personal data.
• Request correction of your personal data.
• Request erasure of your personal data.
• Object to processing of your personal data.
• Request restriction of processing your personal data.
• Request transfer of your personal data.
• Right to withdraw consent.

10. Children's Privacy

Our service is not intended for children under the age of 13. We do not knowingly collect personal information from children under 13. If you are a parent or guardian and you are aware that your child has provided us with personal information, please contact us so that we can take necessary actions.

11. 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 on this page and updating the "Last Updated" date at the top of this policy. You are advised to review this privacy policy periodically for any changes.