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How the Private PDF app works

Private PDF wraps the DayFiles browser-first PDF runtime in mobile app shells. Android stays tool-first, while iOS is planned as the premium paid version with Edit PDF and Redact PDF enabled at launch.

By DayFiles Editorial TeamLast updated Apr 21, 2026

Mobile app shell plus local PDF runtime

The Android and iOS apps use a native shell to host the DayFiles PDF interface and client-side processing engines. That lets the apps feel mobile-native while keeping the core supported PDF work on the device.

This approach is different from an upload-and-wait PDF SaaS app because the normal path is still local execution rather than a remote conversion queue.

Premium iOS launch scope

The iOS launch is planned as the premium mobile version. It keeps the broad PDF toolkit and adds Edit PDF and Redact PDF as first-class launch workflows.

Edit PDF is intended for text-based PDF editing with clear limits for scanned or OCR-heavy files. Redact PDF is intended for manual redaction boxes, page review, and flattened permanent export.

Offline-ready behavior

After the app loads successfully and caches the required assets, many supported workflows can continue without a live network connection. Device storage pressure or cache clearing can remove those assets later, which may require the app to reconnect once.

Offline readiness improves convenience, but it does not guarantee every route or external support page remains available without connectivity.

File selection and export on mobile

You choose the source files through the platform file picker and complete the workflow in-app. When output is ready, the app uses native save or share flows so you can pick the destination yourself.

This keeps the final step under device control instead of automatically pushing files to a server account.

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