Privacy Policy for Document Viewer - PDF Reader

Effective date: September 29, 2026

Package: app.papergrid.paperstack.documentviewer

  1. Local paper stack

    The file index, favorites notebook, extracted document text, PDF thumbnails, and playback remain on the device. No Paperstack cloud endpoint exists.

  2. Storage scope

    All files access supports the product's device-wide reading and management purpose. Permanent removal happens only after the user accepts a dedicated confirmation.

  3. Installer dispatch

    A deliberately selected APK is copied to private cache, shared read-only with Android's installer, and then governed by the installer's visible controls.

  4. No third-party collection

    The release does not contain analytics, advertising, telemetry, registration, or online document-processing services. User data is not sold.

  5. Retention

    Favorite paths live in a small app-local notebook until removed or application data is cleared. Dispatch copies are temporary cache items.