HeliBoard

Customizable open-source keyboard

AppID:	helium314.keyboard
Author:	Helium314
License:	GPL-3.0-only
Donation:	LiberaPay
InRepoSince:	2024-02-15
LastRepoUpdate:	2026-07-10
LastAppUpdate:	2026-07-10
LastVersion:	4.0
Categories:	System
APK source:	Github
Google Play:	Check if it's there

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

WhatsNew:

* add background gesture data gathering
* add file / image functionality to clipboard history
* add floating keyboard
* add Unicode 17.0 emojis
* add separate scale settings for foldedable phones
* add touchpad mode on space slide
* add option to disable spell checker suggestion popup
* change autocorrect confidence to a slider
* add key gaps width slider
* distribute toolbar keys evenly
* fix security issue when restoring backup from manipulated zip file
* and more fixes and improvements...

Hint: This app is available in both, F-Droid Main and IzzyOnDroid repos. For details on this, please see here.

Download Metadata Source Issues Translation ChangeLog

While you can download the APKs here directly, you should preferably use an F-Droid client so the app stays up-to-date on your device. Some clients have this repo enabled by default, e.g. Neo Store, Droid-ify, or, of course, the IzzyOnDroid client by Sunil. With others (like the official client) you'll have to add this repo manually (see the hint on top of the package list for how to do that).

Packages

Version 4.0 (2026-07-10)

Android Versions:

Target: 16.0
MinVer: 5.0
ABIs: arm64-v8a, armeabi-v7a, x86, x86_64

App Configuration & Special Access

Permissions:

Malware-Check:Passed

27 Libraries detected:

Libraries:

Android Support v4 (Development Framework)
The Android Support Library is not actually a single library, but rather a collection of libraries that can roughly be divided into two groups: compatibility and component libraries. For details, please see Understanding the Android Support Library.
AndroidX Activity (Utility)
provides the base Activity subclass and the relevant hooks to build a composable structure on top.
Android Jetpack Annotations (Utility)
library that contains the annotations for Android Jetpack.
Arch (Utility)
helper for other arch dependencies, including JUnit test rules that can be used with LiveData.
Autofill (Utility)
improve autofill accuracy via extending hints.
Android Support Library collections (Utility)
standalone efficient collections.
Jetpack Compose (Development Framework)
a framework to define UIs programmatically with composable functions that describe its shape and data dependencies.
Concurrent (Utility)
AndroidX library to help move tasks off the main thread with coroutines and take advantage of ListenableFuture.
Androidx Core (Utility)
a static library that you can add to your Android application in order to use APIs that are either not available for older platform versions or utility APIs that aren't a part of the framework APIs.
Android Support Library Custom View (UI Component)
a module to implement custom views. Part of the Android Support Library.
Android Emoji2 Compat (UI Component)
core library to enable emoji compatibility in Kitkat and newer devices to avoid the empty emoji characters.
Androidx Graphics (Utility)
leverages graphics facilities across multiple Android platform releases.
Interpolator (UI Component)
AndroidX library to use animation interpolators on older platforms.
Lifecycle (Utility)
perform actions in response to a change in the lifecycle status of another component, such as activities and fragments.
Navigation (Utility)
a framework for navigating between 'destinations' within an Android application that provides a consistent API whether destinations are implemented as Fragments, Activities, or other components.
ProfileInstaller (Utility)
AndroidX library that enables libraries to prepopulate ahead of time compilation traces to be read by ART.
Recyclerview (Utility)
display large sets of data in your UI while minimizing memory usage.
Android Activity Saved State (Utility)
provides the base Activity subclass and the relevant hooks to build a composable structure on top.
Startup (Utility)
AndroidX library to implement a straightforward, performant way to initialize components at app startup.
Tracing (Utility)
AndroidX library to write trace events to the system trace buffer.
Android Jetpack VersionedParcelable (Utility)
Provides a stable but relatively compact binary serialization format that can be passed across processes or persisted safely.
AndroidX Widget ViewPager2 (UI Component)
replaces AndroidX ViewPager, addressing most of its predecessor’s pain-points, including right-to-left layout support, vertical orientation, modifiable Fragment collections, etc.
Colorpicker Compose (UI Component)
Jetpack Compose color picker library for getting colors from any images by tapping on the desired color.
Kotlin (Utility)
The Kotlin Programming Language
kotlinx.coroutines (Utility)
library support for Kotlin coroutines.
Kotlin serialization (Utility)
Kotlin cross-platform / multi-format serialization.
Reorderable (Utility)
reorder items in Lists and Grids in Jetpack Compose and Compose Multiplatform with drag and drop.

Payment Modules:

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reorder items in Lists and Grids in Jetpack Compose and Compose Multiplatform with drag and drop.

Ads & Analytics:

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reorder items in Lists and Grids in Jetpack Compose and Compose Multiplatform with drag and drop.

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