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Mobile app · Backup & sync

Keryx

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

  • Free, with trade-offs
  • Windows, macOS, Linux, Android and iOS
  • Open source

Overview

Features described in its F-Droid listing, in its GitHub repository and on its official website: offline use, full-text search, sync across devices, tags and folders.

Services and protocols mentioned: Dropbox, OneDrive and Google Drive.

Requires Google Play services.

Overview written by LicitPro from the documentation published by the authors and the cited sources; we have not tried the resource ourselves.

Excerpts that establish this information
  • “Keryx is a free, open-source, local-first RSS reader.” — official website, 10 November 2026
  • “Read anywhere, sync through your own cloud storage, with fast local full-text search and no tracking.” — official website, 10 November 2026
  • “Multi-device sync: via cloud storage (Dropbox / OneDrive / Google Drive — on Android, Google” — GitHub, 10 November 2026
  • “Organize feeds with tags (cross-cutting labels) and folders (hierarchical grouping)” — F-Droid, 10 November 2026
  • “OPML import and export, for moving to or from other RSS readers and for backing up your subscriptions” — F-Droid, 10 November 2026
  • “Keryx has no user accounts and no server operated by its developer.” — F-Droid, 10 November 2026
  • “Drive requires Google Play services, so a device without it is offered Dropbox and OneDrive)” — GitHub, 10 November 2026

At a glance

Keryx is free, with trade-offs: it relies on a non-free online service.

Its licence (MIT) is a permissive open source licence: use, modification and redistribution are allowed, including in commercial projects.

Strengths

  • Open source code
  • No advertising
  • Commercial use allowed

Weaknesses

  • Flagged by F-Droid: relies on a non-free online service

Sources and checks

  • Facts collected from Unspecified source (platforms) —
  • Facts collected from F-Droid (credit card, source code, publisher, licence, free status, platforms, ads, commercial use, version) —
  • Last technical check: 7 November 2026
  • Description from F-Droid — F-Droid (citation courte)

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