Privacy Policy

Last updated November 7, 2026

Tilde is made by Channelist. This policy explains what information the app handles and why. In short: your library stays on your device, and we don’t sell your data.

Information stored on your device

Your books, shelves, reading progress, and notes are stored locally on your iPhone. If you don’t sign in, we don’t keep a copy on our servers, and deleting the app deletes this data.

Sign-in and cloud backup

Signing in with Apple or Google is optional. If you sign in, we receive an account identifier from Apple or Google, and we store a backup of your library (books, shelves, and reading progress) along with basic device information (platform and app version) so you can restore your library on another device. We don’t store your email address or password. To delete your account and backup, email us at the address below.

Photos and camera

When you photograph a bookshelf, the image is sent to our server and processed by Anthropic’s Claude API to identify the books in it. Images are used only to return results to you, and we don’t store them. Barcode scanning happens on your device.

Book information lookups

To fill in titles, authors, covers, series, and genres, the app sends book identifiers (like ISBNs or titles) to Open Library and Google Books. These requests don’t include personal information.

Purchases

Subscriptions are processed by Apple. We use RevenueCat to check your subscription status, which receives an anonymous app user ID and your purchase history. We never see your payment details.

Analytics and tracking

Tilde doesn’t use advertising, third-party analytics, or cross-app tracking.

Children

Tilde isn’t directed at children under 13, and we don’t knowingly collect their information.

Changes

If this policy changes, we’ll update this page and the date above.

Contact

Questions? Email [email protected].