Privacy Policy

Effective date: June 2026

Cipher: Hacker Notebook is an offline-first private notebook app designed for local note writing and organization.

No accounts, no ads, no tracking

Cipher does not require an account.

Cipher does not show ads.

Cipher does not use analytics, advertising SDKs, or tracking SDKs.

Cipher does not sell user data.

Data collection

Cipher does not collect personal information from users.

Cipher does not collect names, email addresses, phone numbers, contacts, location, photos, messages, financial information, or health information.

Local storage

Notes created in Cipher are stored locally on the user’s device.

The app is designed so notes remain on the device unless the user chooses to export, import, back up, restore, share, or otherwise move their data manually.

Security

Cipher includes local privacy features such as PIN protection, note locking, and local encrypted storage where supported by the app version and device.

Users are responsible for remembering their PIN and recovery information.

Data sharing

Cipher does not share user data with third parties.

Cipher does not upload notes to cloud servers.

Cipher does not send note content to external services.

Internet and network use

Cipher is designed as an offline-first app.

If future versions add optional online features, this privacy policy will be updated before those features are released.

Children

Cipher is not designed for children. It is intended for general productivity use by developers, writers, and privacy-focused users.

User control

Users can create, edit, delete, export, import, back up, or restore their notes using available app features.

Deleted notes may remain temporarily in trash if the app’s trash safety feature is enabled.

Changes to this policy

This privacy policy may be updated when the app changes. Any updates will be posted on this page.

Contact

For questions about this privacy policy, contact:

itsmevikashkr7@gmail.com