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Keryx

One reader. Every device. Local-first RSS reader with optional cloud sync.
One reader. Every device.

Keryx is a local-first, cross-platform RSS reader. By default, all of your data lives on your device; turn on cloud sync only if you want the same subscriptions, read/starred status, and articles to follow you between your phone and your desktop.

FEATURES

• Multi-device sync via your own cloud storage (Dropbox or OneDrive) — no account with Keryx itself, ever. (Google Drive sync, available in the Google Play and GitHub builds, is not part of the F-Droid build because it needs Google Play services.)
• Local-first: works fully offline, with no sync required
• Fast local full-text search across article titles and content
• Organize feeds with tags (cross-cutting labels) and folders (hierarchical grouping)
• RSS 2.0 and Atom 1.0 support (RSS 1.0/RDF is also loosely parsed)
• OPML import and export, for moving to or from other RSS readers and for backing up your subscriptions
• Completely free — no freemium tiers, no trial period, no ads
• Open source — the full source code is public and can be inspected or modified by anyone

PRIVACY

Keryx has no user accounts and no server operated by its developer. There is nothing to sign up for, and nothing that its developer's own infrastructure ever receives. The app includes no analytics, telemetry, crash reporting, advertising, or tracking of any kind. The F-Droid build contains no Google Play services and never checks for updates itself — F-Droid does that.

Keryx talks only to servers directly relevant to what you're doing: the feeds you subscribe to (and their favicons) and — only if you connect one — Dropbox or OneDrive for sync. Nothing else.

Learn more, including the full privacy policy, at https://keryx.merc.works
  • 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.

Download F-Droid
  • Version 0.26.0 (260099) suggested Added on Oct 22, 2026

    arm64-v8a armeabi-v7a x86 x86_64

    This version requires Android 8.0 or newer.

    It is built and signed by the original developer, 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.
    • run foreground service
      Allows the app to make use of foreground services.
    • 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.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • works.merc.keryx.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 19 MiB PGP Signature | Build Log

  • Version 0.25.0 (250099) - Added on Oct 15, 2026

    arm64-v8a armeabi-v7a x86 x86_64

    This version requires Android 8.0 or newer.

    It is built and signed by the original developer, 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.
    • run foreground service
      Allows the app to make use of foreground services.
    • 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.
    • prevent phone from sleeping
      Allows the app to prevent the phone from going to sleep.
    • works.merc.keryx.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION

    Download APK 19 MiB PGP Signature | Build Log

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