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Pitak

Privacy-first offline library catalogue with an encrypted lending vault
Pitak is a privacy-first, offline personal library catalogue. Catalogue your books, lend them to borrowers from an encrypted vault, keep a wishlist, import/export your data, make portable backups, and optionally publish a read-only library site.

Features:

* Library — add, edit, search, sort and filter books; soft-delete with restore; on-device cover capture; ISBN barcode scan with metadata lookup (Open Library → Google Books, chained and cached).
* Borrowers vault — a persistent, AES-256-GCM encrypted store for borrowers and loans, unlocked by a passphrase (Argon2id key derivation). Optional biometric unlock.
* Wishlist — track books to acquire; move them to the library on purchase.
* Import / Export — JSON, CSV (including Goodreads import), and paginated PDF export with Indic-script support.
* Backup / Restore — portable .pitabak archives.
* Publish — optionally push a read-only library viewer to GitHub Pages, with PII redaction.
* App-lock — optional biometric/device-credential gate before the library screen.

Privacy posture: local-first by default. Sensitive data lives in the platform Keystore; secrets are held as wipeable bytes. Network calls happen only on explicit user action (ISBN lookup, publish, opt-in remote covers). Screenshots are blocked while sensitive data is visible.

The cryptographic core is written in Rust and built entirely from source.
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Versions

Although APK downloads are available below to give you the choice, you should be aware that by installing that way you will not receive update notifications and it's a less secure way to download. We recommend that you install the F-Droid client and use that.

Download F-Droid
  • Version 1.3.1 (193) suggested Added on Sep 22, 2026

    arm64-v8a

    This version requires Android 7.0 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Permissions
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • take pictures and videos
      This app can take pictures and record videos using the camera while the app is in use.
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
    • record audio
      This app can record audio using the microphone while the app is in use.
    • use biometric hardware
      Allows the app to use biometric hardware for authentication
    • use fingerprint hardware
      Allows the app to use fingerprint hardware for authentication
    • modify or delete the contents of your shared storage
      Allows the app to write the contents of your shared storage.
    • dev.khoj.pitaka.fdroid.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 34 MiB PGP Signature | Build Log

  • Version 1.3.1 (192) - Added on Sep 22, 2026

    armeabi-v7a

    This version requires Android 7.0 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Permissions
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • take pictures and videos
      This app can take pictures and record videos using the camera while the app is in use.
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
    • record audio
      This app can record audio using the microphone while the app is in use.
    • use biometric hardware
      Allows the app to use biometric hardware for authentication
    • use fingerprint hardware
      Allows the app to use fingerprint hardware for authentication
    • modify or delete the contents of your shared storage
      Allows the app to write the contents of your shared storage.
    • dev.khoj.pitaka.fdroid.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 30 MiB PGP Signature | Build Log

  • Version 1.3.1 (191) - Added on Sep 22, 2026

    x86_64

    This version requires Android 7.0 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Permissions
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • take pictures and videos
      This app can take pictures and record videos using the camera while the app is in use.
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
    • record audio
      This app can record audio using the microphone while the app is in use.
    • use biometric hardware
      Allows the app to use biometric hardware for authentication
    • use fingerprint hardware
      Allows the app to use fingerprint hardware for authentication
    • modify or delete the contents of your shared storage
      Allows the app to write the contents of your shared storage.
    • dev.khoj.pitaka.fdroid.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 36 MiB PGP Signature | Build Log

    • New in version 1.3.0
    * Share your library as a visiting card: a PNG with logo, name, address, QR and link in 4 styles (Classic, Dark, Gradient, Framed). "Share link only" remains.
    * Faster: the library list loads in pages; backups, merges, PDF export and cover downscaling run off the UI thread; PDF export shows progress and can be cancelled.
    * Merge review: resolve conflicts and duplicates row by row.
    * Fixes: publish targets the live Pages branch; network deadlines and size caps; stricter import validation.
  • Version 1.3.0 (183) - Added on Sep 18, 2026

    arm64-v8a

    This version requires Android 7.0 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Permissions
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • take pictures and videos
      This app can take pictures and record videos using the camera while the app is in use.
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
    • record audio
      This app can record audio using the microphone while the app is in use.
    • use biometric hardware
      Allows the app to use biometric hardware for authentication
    • use fingerprint hardware
      Allows the app to use fingerprint hardware for authentication
    • modify or delete the contents of your shared storage
      Allows the app to write the contents of your shared storage.
    • dev.khoj.pitaka.fdroid.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 34 MiB PGP Signature | Build Log

  • Version 1.3.0 (182) - Added on Sep 17, 2026

    armeabi-v7a

    This version requires Android 7.0 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Permissions
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • take pictures and videos
      This app can take pictures and record videos using the camera while the app is in use.
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
    • record audio
      This app can record audio using the microphone while the app is in use.
    • use biometric hardware
      Allows the app to use biometric hardware for authentication
    • use fingerprint hardware
      Allows the app to use fingerprint hardware for authentication
    • modify or delete the contents of your shared storage
      Allows the app to write the contents of your shared storage.
    • dev.khoj.pitaka.fdroid.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 30 MiB PGP Signature | Build Log

  • Version 1.3.0 (181) - Added on Sep 17, 2026

    x86_64

    This version requires Android 7.0 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Permissions
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • take pictures and videos
      This app can take pictures and record videos using the camera while the app is in use.
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
    • record audio
      This app can record audio using the microphone while the app is in use.
    • use biometric hardware
      Allows the app to use biometric hardware for authentication
    • use fingerprint hardware
      Allows the app to use fingerprint hardware for authentication
    • modify or delete the contents of your shared storage
      Allows the app to write the contents of your shared storage.
    • dev.khoj.pitaka.fdroid.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 36 MiB PGP Signature | Build Log

    • New in version 1.2.0
    * Security: biometric unlock bound to a hardware key released only after your fingerprint/face; vault sessions rejected after lock; restore is all-or-nothing; archive limits enforced before reading.
    * Covers: optional one-time download from Open Library (off by default; the Settings toggle is the consent), saved as a normal local cover.
    * Wishlist purchase is one transaction; on failure the entry stays untouched.
    * App lock covers every screen; narrow-screen layouts; imports keep covers.
  • Version 1.2.0 (173) - Added on Sep 14, 2026

    arm64-v8a

    This version requires Android 7.0 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Permissions
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • take pictures and videos
      This app can take pictures and record videos using the camera while the app is in use.
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
    • record audio
      This app can record audio using the microphone while the app is in use.
    • use biometric hardware
      Allows the app to use biometric hardware for authentication
    • use fingerprint hardware
      Allows the app to use fingerprint hardware for authentication
    • modify or delete the contents of your shared storage
      Allows the app to write the contents of your shared storage.
    • dev.khoj.pitaka.fdroid.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 34 MiB PGP Signature | Build Log

  • Version 1.2.0 (172) - Added on Sep 14, 2026

    armeabi-v7a

    This version requires Android 7.0 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Permissions
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • take pictures and videos
      This app can take pictures and record videos using the camera while the app is in use.
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
    • record audio
      This app can record audio using the microphone while the app is in use.
    • use biometric hardware
      Allows the app to use biometric hardware for authentication
    • use fingerprint hardware
      Allows the app to use fingerprint hardware for authentication
    • modify or delete the contents of your shared storage
      Allows the app to write the contents of your shared storage.
    • dev.khoj.pitaka.fdroid.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 30 MiB PGP Signature | Build Log

  • Version 1.2.0 (171) - Added on Sep 14, 2026

    x86_64

    This version requires Android 7.0 or newer.

    It is built and signed by F-Droid, and guaranteed to correspond to this source tarball.

    Permissions
    • view network connections
      Allows the app to view information about network connections such as which networks exist and are connected.
    • take pictures and videos
      This app can take pictures and record videos using the camera while the app is in use.
    • have full network access
      Allows the app to create network sockets and use custom network protocols. The browser and other applications provide means to send data to the internet, so this permission is not required to send data to the internet.
    • read the contents of your shared storage
      Allows the app to read the contents of your shared storage.
    • record audio
      This app can record audio using the microphone while the app is in use.
    • use biometric hardware
      Allows the app to use biometric hardware for authentication
    • use fingerprint hardware
      Allows the app to use fingerprint hardware for authentication
    • modify or delete the contents of your shared storage
      Allows the app to write the contents of your shared storage.
    • dev.khoj.pitaka.fdroid.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 36 MiB PGP Signature | Build Log

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