Privacy Policy
Last updated: 2026-04-09
1. Introduction
This Privacy Policy explains how Epoche collects, uses, and protects your personal information when you use our service.
2. Information We Collect
We collect: (a) account information (email, username, profile data); (b) usage data (pages visited, features used); (c) content you upload; (d) device and browser information; (e) AI interaction data for service improvement.
3. How We Use Your Information
We use your information to: provide and improve the service; personalize your experience; process AI features; send service notifications; ensure platform security; and comply with legal obligations.
4. Cookies and Tracking
We use three categories of cookies: (a) Essential — required for authentication, session management, locale preference, and CSRF protection; cannot be disabled. (b) Analytics — aggregated usage measurement so we can improve features; off by default. (c) Advertising and affiliate — Google AdSense (ad personalization, frequency capping, anti-fraud) and Amazon Associates (purchase attribution from book recommendations); off by default. You can change these choices at any time from the Cookie settings link in the footer.
5. Third-Party Services
We use third-party services including: (1) Google Cloud / Vertex AI / Cloud Run (AI generation, TTS audio synthesis, infrastructure hosting); (2) Supabase (authentication, database, file storage); (3) Stripe (subscription payments — Stripe.js drops cookies on checkout pages once you proceed to payment, governed by Stripe's privacy policy at stripe.com/privacy); (4) Google AdSense (ad serving on Free-tier pages — see policies.google.com/technologies/ads); (5) Amazon Associates (affiliate links to amazon.com / amazon.co.jp etc. — Amazon places its own cookies on the destination site); (6) jsDelivr / Cloudflare (KaTeX and code-highlight CDN — no personal data sent). For users in the EEA, UK, and Switzerland, advertising and analytics cookies are loaded only after explicit consent. California residents may exercise their CCPA rights via the "Do Not Sell or Share My Personal Information" link in the footer.
6. Data Security
We implement industry-standard security measures including encryption, access controls, and regular security audits to protect your data.
7. Your Rights
You have the right to: access your personal data; correct inaccurate data; delete your account and data; export your data; opt out of non-essential data processing.
8. Children's Privacy
Epoche is not intended for children under 13. We do not knowingly collect personal information from children under 13.
9. Changes to This Policy
We may update this policy periodically. We will notify you of significant changes and request renewed consent when required.
10. Contact Us
For privacy-related inquiries, please contact us at support@epoche.app.