Privacy Policy

Last Updated: November 30, 2025

LLD Problems ("us", "we", or "our") operates the lldproblems.com website (the "Service"). This page informs you of our policies regarding the collection, use, and disclosure of personal data when you use our Service and the choices you have associated with that data.

1. What Information Do We Collect?

We may collect the following personal data from you when you use the Website or the Product:

  • Name (via Google/GitHub login)
  • Email address (via Google/GitHub login)
  • Profile Image (via Google/GitHub login)
  • Payment Information (processed securely by Stripe, we do not store full card details)
  • User Feedback (if submitted via our feedback form)

We may also automatically collect certain information about your device and usage of the Website or the Product, such as your IP address, browser type, operating system, access times, and pages visited.

Additionally, when you engage in AI-driven features (like generating "Core Entities" or viewing interview frequency data), we may process related interaction data through AI platforms to provide these services.

2. How Do We Use Your Information?

We use your personal data for the following purposes:

  • To provide and maintain the Service (e.g., tracking your progress, managing your premium access)
  • To provide the best possible product experience
  • To communicate with you about the Product, including sending service updates or promotional emails (which you can opt-out of)
  • To provide AI-driven insights, we use your interactions with the Product. This involves processing data through third-party AI platforms, including OpenAI and Google Gemini.

3. How Do We Share Your Information?

We may share your personal data with third parties in the following circumstances:

  • With Stripe for payment processing.
  • With law enforcement agencies, regulators, and other government bodies where we are required to do so by law.
  • In connection with a merger, acquisition, or sale of all or a portion of our business.
  • For AI-driven features, we share necessary context (e.g., problem descriptions) with third-party AI platforms (OpenAI, Google) to generate content. These platforms are bound by their own data use policies.

4. How Do We Protect Your Information?

We take reasonable and appropriate measures to protect your personal data from loss, misuse, unauthorized access, disclosure, alteration, and destruction. We use secure providers like NextAuth for authentication and Stripe for payments to ensure your sensitive data is handled with industry-standard security.

5. What Are Your Rights?

You have the following rights with respect to your personal data:

  • The right to access your personal data and to receive a copy of it
  • The right to correct any inaccuracies in your personal data
  • The right to object to the processing of your personal data
  • The right to have your personal data erased in certain circumstances (e.g., deleting your account)
  • The right to restrict the processing of your personal data in certain circumstances
  • The right to data portability
  • The right to withdraw your consent to the processing of your personal data at any time

6. Use of Cookies and Similar Technologies

We use cookies and similar technologies (such as web beacons and pixels) to collect information about your usage of the Website and the Product, to remember your preferences (e.g., login session), and to personalize your experience.

You can set your browser to refuse all cookies or to indicate when a cookie is being sent. However, some features of the Website (like staying logged in) may not function properly without cookies.

7. How Long Do We Retain Your Information?

We retain your personal data for as long as necessary to fulfill the purposes for which we collected it, including for the purposes of satisfying any legal, accounting, or reporting requirements. If you delete your account, your personal data is removed from our active databases.

8. Contact Us

If you have any questions or concerns about this Privacy Policy or our privacy practices, please contact us at lldproblems@gmail.com.

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