Cookie Policy
Last updated: March 20, 2026
This Cookie Policy explains how ChapterKeep uses cookies and similar technologies when you use our web application. By continuing to use ChapterKeep, you consent to the use of cookies as described in this policy.
1. What Are Cookies?
Cookies are small text files that are stored on your device when you visit a website or use a web application. They help the application remember your preferences, understand how you use the service, and improve your experience.
2. Types of Cookies We Use
2.1 Essential Cookies
These cookies are necessary for ChapterKeep to function properly. They enable core features such as:
- User authentication and session management
- Security features and fraud prevention
- Remembering your login state across sessions
- Storing your theme preference (light/dark mode)
These cookies cannot be disabled as ChapterKeep would not function without them.
2.2 Functional Cookies
These cookies remember your preferences and settings to enhance your experience:
- Language and display preferences
- Library view settings (grid/list view)
- Recently viewed books and pages
2.3 Analytics Cookies
We use analytics cookies to understand how users interact with ChapterKeep. This helps us improve features and fix issues. Analytics data is aggregated and does not identify individual users.
- Pages visited and features used
- Time spent on different sections
- Error reporting and performance monitoring
3. Local Storage
In addition to cookies, ChapterKeep uses browser local storage to persist certain data on your device:
- Authentication tokens for keeping you signed in
- Application state and preferences
- Cached data for faster page loads
Local storage functions similarly to cookies but can store larger amounts of data and does not expire automatically.
4. Third-Party Cookies
Some third-party services integrated with ChapterKeep may set their own cookies:
- Supabase: Authentication and database services
- Payment processor: Secure payment handling for Pro subscriptions
We do not control third-party cookies. Please refer to the respective privacy policies of these services for more information.
5. Managing Cookies
You can control cookies through your browser settings. Most browsers allow you to:
- View and delete existing cookies
- Block all cookies or only third-party cookies
- Set preferences for specific websites
- Receive notifications when cookies are set
Please note that disabling essential cookies may prevent ChapterKeep from functioning correctly. You may not be able to sign in or use certain features.
6. Do Not Track
ChapterKeep does not currently respond to "Do Not Track" browser signals. However, we limit our data collection to what is necessary for providing and improving our service.
7. Updates to This Policy
We may update this Cookie Policy from time to time to reflect changes in our practices or applicable regulations. We will update the "Last updated" date at the top of this page.
8. Contact Us
If you have questions about our use of cookies, please contact us at privacy@chapterkeep.app.