package icon

SiYuan

A privacy-first, self-hosted knowledge management app
SiYuan is a privacy-first personal knowledge management system, support fine-grained block-level reference and Markdown WYSIWYG.

Features
Most features are free, even for commercial use.

  • Content block

    • Block-level reference and two-way links

    • Custom attributes

    • SQL query embed

    • Protocol siyuan://



  • Editor

    • Block-style

    • Markdown WYSIWYG

    • List outline

    • Block zoom-in

    • Block horizontal layout

    • Million-word large document editing

    • Mathematical formulas, charts, flowcharts, Gantt charts, timing charts, staffs, etc.

    • Web clipping

    • PDF Annotation link



  • Export

    • Block ref and embed

    • Standard Markdown with assets

    • PDF, Word and HTML

    • Copy to WeChat MP, Zhihu and Yuque



  • Database

    • Table view



  • Spaced repetition

  • Multi-tab, drag and drop to split screen

  • Template snippet

  • JavaScript/CSS snippet

  • Android/iOS APP

  • Docker deployment

  • API

  • Community marketplace



Some features are only available to paid members, for more details please refer to Pricing.
  • 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.

Download F-Droid
  • Version 3.6.5 (315) suggested Added on Apr 21, 2026

    arm64-v8a

    This version requires Android 8.0 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.
    • run foreground service
      Allows the app to make use of foreground services.
    • run foreground service with the type "specialUse"
      Allows the app to make use of foreground services with the type "specialUse"
    • 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.
    • show notifications
      Allows the app to show notifications
    • run at startup
      Allows the app to have itself started as soon as the system has finished booting. This can make it take longer to start the phone and allow the app to slow down the overall phone by always running.
    • Schedule precisely timed actions
      This app can schedule work to happen at a desired time in the future. This also means that the app can run when you're not actively using the device.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • install shortcuts
      Allows an application to add Homescreen shortcuts without user intervention.
    • org.b3log.siyuan.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 59 MiB PGP Signature | Build Log

  • Version 3.6.4 (314) - Added on Apr 15, 2026

    arm64-v8a

    This version requires Android 8.0 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.
    • run foreground service
      Allows the app to make use of foreground services.
    • run foreground service with the type "specialUse"
      Allows the app to make use of foreground services with the type "specialUse"
    • 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.
    • show notifications
      Allows the app to show notifications
    • run at startup
      Allows the app to have itself started as soon as the system has finished booting. This can make it take longer to start the phone and allow the app to slow down the overall phone by always running.
    • Schedule precisely timed actions
      This app can schedule work to happen at a desired time in the future. This also means that the app can run when you're not actively using the device.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • install shortcuts
      Allows an application to add Homescreen shortcuts without user intervention.
    • org.b3log.siyuan.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 59 MiB PGP Signature | Build Log

  • Version 3.6.3 (313) - Added on Apr 03, 2026

    arm64-v8a

    This version requires Android 8.0 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.
    • run foreground service
      Allows the app to make use of foreground services.
    • run foreground service with the type "specialUse"
      Allows the app to make use of foreground services with the type "specialUse"
    • 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.
    • show notifications
      Allows the app to show notifications
    • run at startup
      Allows the app to have itself started as soon as the system has finished booting. This can make it take longer to start the phone and allow the app to slow down the overall phone by always running.
    • Schedule precisely timed actions
      This app can schedule work to happen at a desired time in the future. This also means that the app can run when you're not actively using the device.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • install shortcuts
      Allows an application to add Homescreen shortcuts without user intervention.
    • org.b3log.siyuan.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 59 MiB PGP Signature | Build Log

Find Apps