Privacy Policy

Last updated: April 2025

1. Information We Collect

When you create an account, we collect your email address and display name via Firebase Authentication (Google sign-in). When you use Glossa, we store:

• Books you upload (PDFs stored in Azure Blob Storage)
• Your reading progress, saved vocabulary, highlights, and game scores
• Language preferences (known and target languages)
• Subscription and billing status (managed by Stripe — we do not store card numbers)

2. How We Use Your Information

• To provide the reading, translation, and vocabulary features
• To track your learning progress (streaks, achievements, spaced repetition)
• To process payments and manage your subscription via Stripe
• To improve the service (aggregated, anonymized usage patterns)

3. Third-Party Services

We use the following third-party services that may process your data:

• Firebase (Google) — authentication
• Azure (Microsoft) — hosting, file storage, translation, text-to-speech
• OpenAI — AI-powered translations and summaries
• Stripe — payment processing

Each service operates under its own privacy policy. We do not sell your data to any third party.

4. Data Storage and Security

Your data is stored in a PostgreSQL database and Azure Blob Storage. All connections use TLS encryption. We follow industry-standard security practices, but no system is 100% secure.

5. Your Rights

You may:

• Export your vocabulary and reading data at any time
• Delete your account and all associated data by contacting us
• Update your profile information from within the app

6. Cookies

We use essential cookies for authentication (Firebase session). We do not use advertising or tracking cookies.

7. Changes to This Policy

We may update this policy from time to time. We will notify registered users of significant changes via email.

8. Contact

For privacy-related questions, email us at [email protected].