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HeliBoard

Customizable open-source keyboard
New in version 3.2
* add toolbar modes (allows hiding toolbar)
* add some missing emoji variants
* improve subtype screen and dictionary dialog
* fix colors when forcing dark mode
* move most of the portrait / landscape scale settings into a dialog
* remove translations of strings marked as non-translatable
* fix next-screen arrow direction for RTL languages
* fix proper loading of Hebrew locale on Android 15
* have at least a basic keyboard when library doesn't work at all
* minor bug fixes
HeliBoard is a privacy-conscious open-source keyboard, based on AOSP / OpenBoard.
Does not use internet permission, and thus is 100% offline.

Features:

  • Add dictionaries for suggestions and spell check


    • build your own, or get them here, or in the experimental section (quality may vary)

    • additional dictionaries for emojis or scientific symbols can be used to provide suggestions (similar to "emoji search")

    • note that for Korean layouts, suggestions only work using this dictionary, the tools in the dictionary repository are not able to create working dictionaries


  • Customize keyboard themes (style, colors and background image)


    • can follow the system's day/night setting on Android 10+ (and on some versions of Android 9)

    • can follow dynamic colors for Android 12+


  • Customize keyboard layouts (only available when disabling use system languages)

  • Customize special layouts, like symbols, number, or functional key layout

  • Multilingual typing

  • Glide typing (only with closed source library ☹️)


    • library not included in the app, as there is no compatible open source library available

    • can be extracted from GApps packages ("swypelibs"), or downloaded here (click on the file and then "raw" or the tiny download button)


  • Clipboard history

  • One-handed mode

  • Split keyboard (only available if the screen is large enough)

  • Number pad

  • Backup and restore your settings and learned word / history data


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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 3.2 (3201) suggested Added on Jun 15, 2025

    arm64-v8a armeabi-v7a x86 x86_64

    This version requires Android 5.0 or newer.

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

    Permissions
    • read your contacts
      Allows the app to read data about your contacts stored on your phone. Apps will also have access to the accounts on your phone that have created contacts. This may include accounts created by apps you have installed. This permission allows apps to save your contact data, and malicious apps may share contact data without your knowledge.
    • android.permission.READ_USER_DICTIONARY
    • 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.
    • control vibration
      Allows the app to control the vibrator.
    • android.permission.WRITE_USER_DICTIONARY
    • helium314.keyboard.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 22 MiB PGP Signature | Build Log

  • Version 3.1 (3101) - Added on Jun 07, 2025

    arm64-v8a armeabi-v7a x86 x86_64

    This version requires Android 5.0 or newer.

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

    Permissions
    • read your contacts
      Allows the app to read data about your contacts stored on your phone. Apps will also have access to the accounts on your phone that have created contacts. This may include accounts created by apps you have installed. This permission allows apps to save your contact data, and malicious apps may share contact data without your knowledge.
    • android.permission.READ_USER_DICTIONARY
    • 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.
    • control vibration
      Allows the app to control the vibrator.
    • android.permission.WRITE_USER_DICTIONARY
    • helium314.keyboard.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 22 MiB PGP Signature | Build Log

  • Version 3.0 (3008) - Added on May 18, 2025

    arm64-v8a armeabi-v7a x86 x86_64

    This version requires Android 5.0 or newer.

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

    Permissions
    • read your contacts
      Allows the app to read data about your contacts stored on your phone. Apps will also have access to the accounts on your phone that have created contacts. This may include accounts created by apps you have installed. This permission allows apps to save your contact data, and malicious apps may share contact data without your knowledge.
    • android.permission.READ_USER_DICTIONARY
    • 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.
    • control vibration
      Allows the app to control the vibrator.
    • android.permission.WRITE_USER_DICTIONARY
    • helium314.keyboard.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 22 MiB PGP Signature | Build Log

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