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A calendar to track your menstruation and calculate possible fertile days http://arnowelzel.de/wp/en/projects/periodical
  • Java 67.2%
  • HTML 32.8%
2026年07月12日 14:42:38 +02:00
app Implement KeepAndroidOpen notice and fix potential issues with API level below 26 2026年04月19日 18:21:35 +02:00
gradle/wrapper Upgrade Gradle 2026年03月14日 17:18:45 +01:00
metadata Fix bug when changing period details. 2025年11月17日 21:50:47 +01:00
publish Migrate to Fastlane 2025年04月12日 21:17:09 +03:00
.gitattributes Define behaviour for default line ending handling 2025年04月13日 13:20:16 +02:00
.gitignore Update .gitignore 2023年07月01日 09:56:40 +02:00
build.gradle Implement KeepAndroidOpen notice and fix potential issues with API level below 26 2026年04月19日 18:21:35 +02:00
CHANGES Implement new backup based on JSON and comment out standard days indication (will be added later as an option) 2023年09月17日 13:49:22 +02:00
COPYING License changed to GPL V3, since CC-BY-SA is not really suitable for software ;-) 2013年02月17日 23:11:37 +00:00
gradle.properties Upgrade Gradle and dependencies, bump version info 2026年01月25日 15:13:45 +01:00
gradlew Changed build system to Gradle. 2015年12月27日 14:16:55 +01:00
gradlew.bat Changed build system to Gradle. 2015年12月27日 14:16:55 +01:00
README.md Update README.md 2026年07月12日 14:42:38 +02:00
SECURITY.md Create SECURITY.md 2019年05月24日 15:09:29 +02:00
settings.gradle Upgrade Gradle and dependencies, bump version info 2026年01月25日 15:13:45 +01:00

Periodical

A calendar to track your menstruation and calculate possible fertile days

Copyright (C) 2012-2026 Arno Welzel

WARNING: It is not recommended to use this calendar to avoid pregnancy! There are more accurate methods, like measuring the basal body temperature.

Source: https://codeberg.org/askaaron/periodical

Download latest version at Google Play:
https://play.google.com/store/apps/details?id=de.arnowelzel.android.periodical

Download latest version at F-Droid:
https://f-droid.org/repository/browse/?fdid=de.arnowelzel.android.periodical

Download latest version as APK:
http://arnowelzel.de/download/Periodical.apk

My position on using AI in my free software projects

AI-generated contributions will never be knowingly accepted. If and where unknowingly accepted, help in pointing out and eliminating the slop portions is generally welcome.

Translation

Albert Kannemeyer, Sébastien Gravier, Primokorn, Valerio Bozzolan, Ingrid Spangler, Wjatscheslaw Stoljarski, Pander, Laura Arjona Reina, Naofumi Fukue, Tomasz Terka, Nikoletta Karasmani, Yaron Shahrabani, Inbar Gover, Turan Guliyeva, Enara Larraitz, Rza Sharifi, Mevlüt Erdem Güven

If you want to help with the translation, you can join the project on Crowdin.

License

This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program. If not, see http://www.gnu.org/licenses/.

"Periodical" is a menstruation calendar with calculation of the fertile days according to Knaus-Ogino originally developed by Arno Welzel.

Tools to used to build this project

Android Studio
http://developer.android.com/tools/studio/index.html