Privacy Policy
This Privacy Policy explains how SecureNotebook ("we", "our", or "the app") handles your data. We are committed to maintaining the absolute privacy and security of your personal information and notes.
1. Zero-Knowledge Architecture & Encryption
SecureNotebook is built on a zero-knowledge security model:
- All notes, records, and databases are encrypted directly on your device using multi-layer encryption keys (AES-256-GCM).
- Your data is never stored, processed, or transmitted in plain text.
- We do not possess your encryption keys or passwords. Only you have the ability to decrypt and view your content.
2. Cloud Backup & Synchronization
To enable synchronization across multiple devices, encrypted backups of your database are securely transferred to cloud infrastructure (hosted via Google Firebase). Because the database is fully encrypted prior to transmission, the servers only store encrypted binary blobs. Neither we, Google, nor any third party can access, read, or decrypt the contents of your synced data.
3. Information We Do Not Collect
- We do not collect or track your location.
- We do not collect personal identifiers, contacts, or device analytics.
- We do not use advertising frameworks or third-party tracking libraries.
- We never sell, rent, or monetize your personal data.
4. Account & Authentication Information
If you create an account to facilitate sync, we only store essential credentials (such as your email address and securely hashed authentication tokens) required to authenticate your devices.
5. Data Deletion and Account Retention
You have complete control over your data. You may delete individual notes, wipe your synchronized cloud backups, or permanently delete your entire account directly in the app under Settings → Delete Account, or by contacting us at support@sheleh.app. Deleting your account immediately and permanently erases all associated authentication records and cloud-stored encrypted blobs - this happens right away as part of account deletion, not on a delay. Note that deleting your account does not automatically cancel any active subscription purchased through the Apple App Store or Google Play; those must be cancelled separately through your store account settings.
6. Changes to This Policy
We may update our Privacy Policy periodically. Any changes will be posted on this page with an updated revision date.
7. Contact Us
If you have any questions or concerns regarding this Privacy Policy, please contact us at: support@sheleh.app.