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Chaka Book Reader

Committed to improving reading experience
New in version 1.27.1a.27
· vertical scrollers are added to content windows
· links in help window are opened with default browser instead of in place
· a button titled “Landscape” is added to change landscape/portrait view manually
· in flip horizontal and rtl text mode, or flip vertical and not rtl text mode, default minimum scale of non reflowable documents(eg. PDFs) is increased to fit the page height or width to the window, now a button titled “Fit Screen” is added to view the whole page
· under some dark palettes,
Read fluently and comfortably, with simple and clear interface.

Supported Files:
· Documents: PDF, EPUB, DJVU, MOBI, FB2, XPS, TXT, HTML
· Comics: CBZ, CBR, CBT
· Office files: DOCX, XLSX, PPTX
· Multi-Page images: TIFF
· Archives: ZIP, GZIP, RAR, TAR, 7-ZIP packages of above files.

Features:
· Horizontal / Vertical Flip
· Continuous Scroll
· Lock Stray: Keep scroll straight
· Margin Crop
· Focus Mode: Keep page position on flipping zoomed pages
· Smarty Focus: Recognize page border bias in Focus Mode
· RtL Text: Support Top-to-Bottom, Right-to-Left(TB-RL) text
· Single Column: Support scanned dual-spread PDF page
· Color Palette
· Font Size selectable
· Text Select and more operations
· Table of Contents
· Bookmarks
· Links
· Search
· Share book
· Remember reading states

The project is under active development.
  • app screenshot
  • app screenshot
  • app screenshot
  • app screenshot
  • app screenshot

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.

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  • Version 1.27.1a.27 (1734) suggested Added on Sep 19, 2026

    arm64-v8a

    This version requires Android 5.0 or newer.

    It is built and signed by the original developer, and guaranteed to correspond to this source tarball.

    Permissions
    • 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.
    • net.timelegend.chaka.viewer.app.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 8 MiB PGP Signature | Build Log

  • Version 1.27.1a.27 (1733) - Added on Sep 19, 2026

    armeabi-v7a

    This version requires Android 5.0 or newer.

    It is built and signed by the original developer, and guaranteed to correspond to this source tarball.

    Permissions
    • 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.
    • net.timelegend.chaka.viewer.app.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 7.1 MiB PGP Signature | Build Log

  • Version 1.27.1a.27 (1732) - Added on Sep 19, 2026

    x86_64

    This version requires Android 5.0 or newer.

    It is built and signed by the original developer, and guaranteed to correspond to this source tarball.

    Permissions
    • 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.
    • net.timelegend.chaka.viewer.app.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 8.4 MiB PGP Signature | Build Log

  • Version 1.27.1a.27 (1731) - Added on Sep 19, 2026

    x86

    This version requires Android 5.0 or newer.

    It is built and signed by the original developer, and guaranteed to correspond to this source tarball.

    Permissions
    • 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.
    • net.timelegend.chaka.viewer.app.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 8.4 MiB PGP Signature | Build Log

    • New in version 1.27.1a.26
    · add supports of outline, text select/search and hyperlinks for djvu document
  • Version 1.27.1a.26 (1724) - Added on Aug 29, 2026

    arm64-v8a

    This version requires Android 5.0 or newer.

    It is built and signed by the original developer, and guaranteed to correspond to this source tarball.

    Permissions
    • 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.
    • net.timelegend.chaka.viewer.app.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 8 MiB PGP Signature | Build Log

  • Version 1.27.1a.26 (1723) - Added on Aug 29, 2026

    armeabi-v7a

    This version requires Android 5.0 or newer.

    It is built and signed by the original developer, and guaranteed to correspond to this source tarball.

    Permissions
    • 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.
    • net.timelegend.chaka.viewer.app.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 7.1 MiB PGP Signature | Build Log

  • Version 1.27.1a.26 (1722) - Added on Aug 29, 2026

    x86_64

    This version requires Android 5.0 or newer.

    It is built and signed by the original developer, and guaranteed to correspond to this source tarball.

    Permissions
    • 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.
    • net.timelegend.chaka.viewer.app.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 8.4 MiB PGP Signature | Build Log

  • Version 1.27.1a.26 (1721) - Added on Aug 29, 2026

    x86

    This version requires Android 5.0 or newer.

    It is built and signed by the original developer, and guaranteed to correspond to this source tarball.

    Permissions
    • 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.
    • net.timelegend.chaka.viewer.app.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 8.4 MiB PGP Signature | Build Log

    • New in version 1.27.1a.25
    · add djvu document support
  • Version 1.27.1a.25 (1714) - Added on Aug 11, 2026

    arm64-v8a

    This version requires Android 5.0 or newer.

    It is built and signed by the original developer, and guaranteed to correspond to this source tarball.

    Permissions
    • 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.
    • net.timelegend.chaka.viewer.app.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 8 MiB PGP Signature | Build Log

  • Version 1.27.1a.25 (1713) - Added on Aug 11, 2026

    armeabi-v7a

    This version requires Android 5.0 or newer.

    It is built and signed by the original developer, and guaranteed to correspond to this source tarball.

    Permissions
    • 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.
    • net.timelegend.chaka.viewer.app.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 7.1 MiB PGP Signature | Build Log

  • Version 1.27.1a.25 (1712) - Added on Aug 11, 2026

    x86_64

    This version requires Android 5.0 or newer.

    It is built and signed by the original developer, and guaranteed to correspond to this source tarball.

    Permissions
    • 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.
    • net.timelegend.chaka.viewer.app.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 8.4 MiB PGP Signature | Build Log

  • Version 1.27.1a.25 (1711) - Added on Aug 11, 2026

    x86

    This version requires Android 5.0 or newer.

    It is built and signed by the original developer, and guaranteed to correspond to this source tarball.

    Permissions
    • 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.
    • net.timelegend.chaka.viewer.app.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 8.4 MiB PGP Signature | Build Log

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