This innovative Periodical app simplifies menstrual cycle tracking and fertility prediction. Using the Knaus-Ogino method, it accurately calculates fertile days and allows you to track symptoms, providing valuable insights into your cycle. Data backup ensures peace of mind, and the app is completely free to use under the GNU General Public License. The developer is readily available via email for any questions or translation assistance. The open-source nature of the app allows for transparency and customization.

Key features include:

• Fertility Tracking: Accurate fertile day calculations using the Knaus-Ogino method.
• Menstrual Symptom Tracking: Monitor symptoms for a better understanding of your cycle.
• Data Backup: Securely back up your data to a memory card or internal storage.
• Free to Use: Download and use Periodical at no cost.
• Translation Support: The developer welcomes translation contributions and questions.
• Open Source: Access the source code for transparency and potential customization.

Periodical offers a comprehensive and user-friendly solution for women seeking to manage and understand their reproductive health. Download it today to take control of your cycle.