Privacy Policy

We collect information you provide, information generated through your learning activity, and technical data needed to operate and secure the Service.

We use the information we collect to:

• Provide and maintain the Service, including authentication and account management
• Generate lessons, quizzes, flashcards, terms, and explanations
• Personalize learning using Learning DNA, signals, and progress data
• Track progress, streaks, points, and analytics
• Operate social features, leaderboards, playlists, and rewards
• Enforce usage limits, prevent abuse, and secure the platform
• Send transactional emails and support communications
• Improve performance, reliability, and content quality

Lernex uses AI models to generate learning content, analyze your answers, and process uploads. This means the text you submit (prompts, answers, documents, and support messages) and relevant context (subject, difficulty, prior activity) may be sent to AI providers for processing.

• Lesson, quiz, flashcard, term, and explanation generation
• OCR for uploaded documents and images
• Audio transcription (Whisper) and TTS translation + speech generation
• Embeddings for search, clustering, and recommendations
• Mistake analysis, explanation fingerprinting, and learning-style adaptation
• Support chat assistance

We log AI usage (model, token counts, costs, provider metadata) along with IP for rate limiting, billing, and usage limits. Automated personalization is used to tailor content and guidance; it does not make decisions with legal or similarly significant effects.

We do not sell your personal information.

We may share information in these cases:

• Service Providers: Hosting, analytics, storage, email, payments, and AI processing providers (including Supabase, Vercel, Stripe, Resend, Groq, DeepInfra, and, if enabled, EigenAI).
• Analytics & Marketing: Vercel Analytics/Speed Insights for performance monitoring; Adsterra for ads if ads are enabled for free-tier users.
• Other Users: Public profiles, leaderboards, public playlists, tutoring threads, and social feed content based on your visibility settings.
• Shared Document Cache: OCR text and titles may be shared across authenticated users when a document is identified as common academic content; private documents remain user-scoped.
• Legal Obligations: If required by law, regulation, or legal process.
• Business Transfers: In the case of a merger, acquisition, or sale of assets.

Lernex includes community features such as public profiles, friends, leaderboards, and social feeds. Your username, avatar, bio, and selected stats can be visible to other users. Your real name is hidden by default unless you enable the “show real name” setting.

Social feed items and tutoring threads are visible to participants based on visibility settings (friends, private, or public). Public playlists can be viewed by other users.

We retain information as long as needed to provide the Service, comply with legal obligations, and resolve disputes. Some data is designed to expire on a shorter schedule.

• Quiz progress is configured to expire after about 7 days of inactivity.
• Placement progress is configured to expire after about 30 days of inactivity.
• Pending lesson queues are cleaned after about 7 days.
• Non-saved lesson history entries are cleaned after about 30 days.
• User-scoped document cache entries are treated as fresh for about 7 days and cleaned after roughly 30 days.
• Shared document cache entries are cleaned after about 30 days.
• Upload history entries not accessed are cleaned after about 90 days.
• Recent interaction signals, hidden-signal events, and mistake occurrences are kept for around 90 days to compute aggregates.
• Usage logs and billing records may be retained longer for accounting and compliance.

We use cookies and local storage to keep you signed in, remember preferences, and measure performance.

• Authentication cookies (Supabase) to maintain your session.
• Local or session storage for theme, onboarding flags, and UI preferences.
• Vercel Analytics and Speed Insights for performance monitoring.
• If ads are enabled, Adsterra may set cookies for ad delivery and measurement.

Depending on your location, you may have the right to access, correct, or delete your personal information and to request a copy of your data.

• Update profile details, preferences, and public visibility settings in your profile.
• Control whether your real name appears on public profiles.
• Manage TTS and reminder settings.
• Request access or deletion by contacting support.

The in-app delete account action currently removes your profile row and signs you out. If you need full deletion of additional records (auth account, usage logs, or history), contact support.