Period Calculator, keeping track of women's menstrual cycle

Apply changes

Click the Apply changes button on the main window to apply any changes you have made to your block list. If you close the program without applying changes, you will be prompted to do so.

Note: you may need to restart your web browser and clear its cache for changes to take effect.

There is a known issue: some security programs may block this change. If alerted, please accept the 'hosts' change.

Even more miscellaneous

In the main window:

  • Click the Update check button to check for new version online.
  • Click the Languages button to choose a language for the user-interface.