Privacy Policy

Last Updated: December 2025

We are committed to protecting your privacy and ensuring the security of your personal information.

1. Introduction

Welcome to LeetCode Daily (the "App"). We are committed to protecting your privacy and ensuring the security of your personal information. This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you use our educational coding practice application.

2. Information We Collect

We collect the following types of information:

Account Information: Name, email address, and authentication credentials when you create an account
Usage Data: Problems solved, progress tracking, streaks, and learning preferences
Device Information: Device type, operating system, and app version for technical support
Subscription Information: Purchase history and subscription status for Pro features
Learning Preferences: Preferred programming language, skill level, and daily problem count

3. How We Use Your Information

We use the collected information to:

Provide and improve our educational services
Deliver personalized daily coding problems based on your skill level
Track your progress and learning achievements
Send you notifications about daily problems and reminders
Process subscription payments and manage Pro features
Provide customer support and respond to inquiries
Analyze app usage to enhance user experience
Comply with legal obligations

4. Data Storage and Security

Your data is stored securely using Firebase services. We implement industry-standard security measures to protect your information, including:

Encrypted data transmission
Secure authentication systems
Regular security audits
Access controls and authentication

However, no method of transmission over the internet or electronic storage is 100% secure. While we strive to protect your data, we cannot guarantee absolute security.

5. Third-Party Services

We use the following third-party services:

Firebase (Authentication, Firestore, Cloud Messaging): For user authentication, data storage, and push notifications
Google Sign-In: For authentication services
Apple Sign-In: For authentication services (iOS)
Google Play Billing / App Store: For subscription management

These services have their own privacy policies. We encourage you to review them.

6. Data Sharing and Disclosure

We do not sell, trade, or rent your personal information to third parties for marketing purposes. We may share your information only in the following circumstances:

With your explicit consent
To comply with legal obligations, court orders, or government requests
To protect our rights, privacy, safety, or property and that of our users
With service providers who assist in operating our app (under strict confidentiality agreements)
In connection with a business transfer, merger, or acquisition
To enforce our Terms of Service or other agreements
To prevent fraud or illegal activities

7. Your Rights and Choices

You have the right to:

Access your personal data
Correct inaccurate information
Request deletion of your account and data
Opt-out of marketing communications
Export your data
Withdraw consent for data processing

To exercise these rights, contact us at the email address provided below.

8. Children's Privacy

Our App is designed for educational purposes and is suitable for users of all ages. However, we do not knowingly collect personal information from children under 13 without parental consent. If you believe we have collected information from a child under 13, please contact us immediately.

9. International Data Transfers

Your information may be transferred to and processed in countries other than your country of residence. These countries may have different data protection laws. By using our App, you consent to the transfer of your information to these countries.

10. GDPR Compliance (European Users)

If you are located in the European Economic Area (EEA), you have additional rights under the General Data Protection Regulation (GDPR):

Right to be informed about data collection
Right of access to your data
Right to rectification of inaccurate data
Right to erasure ("right to be forgotten")
Right to restrict processing
Right to data portability
Right to object to processing
Rights related to automated decision-making

11. CCPA Compliance (California Residents)

If you are a California resident, you have rights under the California Consumer Privacy Act (CCPA):

Right to know what personal information is collected
Right to know if personal information is sold or disclosed
Right to opt-out of the sale of personal information
Right to access your personal information
Right to request deletion of personal information
Right to non-discrimination for exercising your rights

12. Educational Purpose

LeetCode Daily is an educational application designed to help users practice coding and improve their programming skills through daily problem-solving exercises. All data collected is used solely to enhance the educational experience and provide personalized learning recommendations.

13. Changes to This Privacy Policy

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

Posting the new Privacy Policy in the App
Updating the "Last Updated" date
Sending you an email notification (if applicable)

Your continued use of the App after changes constitutes acceptance of the updated policy.

14. Cookies and Tracking Technologies

We may use cookies, local storage, and similar tracking technologies to enhance your experience. These technologies help us:

Remember your preferences and settings
Analyze app usage and performance
Provide personalized content and recommendations
Maintain your login session

You can control the use of certain tracking technologies through your device settings.

15. Data Retention

We retain your personal information for as long as necessary to provide our services and fulfill the purposes outlined in this Privacy Policy. When you delete your account, we will delete or anonymize your personal data within 30 days, except where we are required to retain it for legal, regulatory, or security purposes.

16. Contact Us

If you have any questions, concerns, or requests regarding this Privacy Policy or our data practices, please contact us at:

Developer: LeetCode Daily (Educational App)

Email: support@leetcodedaily.app

We will respond to your inquiry within 2–3 business days.

17. Agreement

By using LeetCode Daily, you acknowledge that you have read, understood, and agree to be bound by this Privacy Policy. If you do not agree with this policy, please do not use our App.