---
title: Install Halkyon on elementary OS using the Snap Store | Snapcraft
description: Get the latest version of Halkyon for on elementary OS - Learn with flashcards,
  studied offline and synced between your devices
url: https://snapcraft.io/install/halkyon/elementary
---

[Canonical Snapcraft](https://snapcraft.io/)

# Install Halkyon on **elementary OS**

# Halkyon

[Halkyon Days (halkyon)](https://snapcraft.io/publisher/halkyon "View all snaps from Halkyon Days (halkyon)")

* [Halkyon Days (halkyon)](https://snapcraft.io/publisher/halkyon "View all snaps from Halkyon Days (halkyon)")

[Install](https://snapcraft.io/install/halkyon/elementary#install)

#### Learn with flashcards, studied offline and synced between your devices

Halkyon is a spaced-repetition app for your own material: studysets of
flashcards, notes, learning paths and PDFs, reviewed on an FSRS schedule. Every
studyset is made by its learners: build yours for any subject, or copy one that
someone published. It works offline and syncs between your devices.

Learn from what you watch: play films and shows from your Jellyfin server,
and every subtitle line is split into dictionary words, with readings above
and the translation below. Tap a word, and it is a flashcard.

Dictionaries for Japanese, Chinese, Korean, German, Greek and English; kanji,
hanzi and Hangul written by hand, each stroke checked; exam plans for the
JLPT, HSK and Korean levels, with a daily pace to your exam's date; and
studysets published to Explore and copied, later releases coming in as
merges that keep your own edits.

You sign in with SimpleLogin, by Proton, or with an email address, a
password and an authenticator app. It connects to halkyon.li, the project's
instance, or to any other: everything an instance needs is in the repository,
to run your own. The app is AGPL-3.0 and the server SSPL-1.0, so all of its
code is public.

Questions and reports: support@halkyon.app

### Package name

* halkyon

---

### License

* AGPL-3.0-or-later

---

### Last updated

* 13 November 2026 - latest/edge

---

##### Report a Snap Store violation

* [Report this Snap](https://snapcraft.io/install/halkyon/elementary#report-snap-modal)

---

[See more information about halkyon ›](https://snapcraft.io/halkyon)

## Enable snaps on elementary OS and install Halkyon

Snaps are applications packaged with all their dependencies to run on all popular Linux distributions from a single build. They update automatically and roll back gracefully.

Snaps are discoverable and installable from the [Snap Store](https://snapcraft.io/store), an app store with an audience of millions.

### Enable snapd

Snap can be installed on elementary OS from the command line. Open *Terminal* from the Applications launcher and type the following:

```
sudo apt update
sudo apt install snapd
```

Either log out and back in again, or restart your system, to ensure snap’s paths are updated correctly.

### Install Halkyon

To install Halkyon, simply use the following command:

```
sudo snap install halkyon --edge
```

### Other popular snaps…

[See more...](https://snapcraft.io/search?categories=featured)

[See more in Featured](https://snapcraft.io/search?categories=featured)

### More things to do…

#### [Get the snap store](https://snapcraft.io/snap-store)

Browse and find snaps from the convenience of your desktop using the snap store snap.

#### [Learn more about snaps](https://snapcraft.io/docs)

Interested to find out more about snaps? Want to publish your own application? Visit [snapcraft.io](https://snapcraft.io/) now.

[Back to top](https://snapcraft.io/install/halkyon/elementary)

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