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Mobile app · Everyday life

Luteal

Private, offline-first cycle tracker separating facts from estimates.

  • Completely free
  • Android
  • Open source

Overview

Luteal is a period tracking mobile app, available on Android.

Features described in its F-Droid listing and in its GitHub repository: offline use, self-hosting on your own server and end-to-end encryption.

File formats mentioned: PDF and HTML.

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
  • “Private, offline-first cycle tracker separating facts from estimates” — F-Droid, 10 November 2026
  • “Private, offline-first cycle tracker separating facts from estimates” — F-Droid, 10 November 2026
  • “It works entirely offline by default, with optional end-to-end encrypted sync.” — GitHub, 10 November 2026
  • “Optional cloud sync: Optional end-to-end encrypted synchronization with self-hosted or community servers.” — F-Droid, 10 November 2026

At a glance

Luteal is completely free: it is open source software, and every feature is available without paying or subscribing.

Its licence (GPL-3.0+) is a copyleft open source licence: you may use, study, modify and redistribute it, including commercially; modified versions must keep the same licence.

Strengths

  • Open source code
  • No advertising
  • Commercial use allowed

Sources and checks

  • Facts collected from F-Droid (credit card, source code, publisher, licence, free status, platforms, ads, commercial use, version) —
  • Last technical check: 6 November 2026
  • Description from F-Droid — F-Droid (citation courte)

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