All cycle dates input into the calendar are available for review and editing. The calendar graphs your cycles duration over the last 12 months. The calendar calculates cycle duration statistics including average and standard deviation. The calendar automatically saves all you cycle dates into a text file for review on Pocket PC or desktop computer. You can save all data into a CSV file (comma separated values text file) for backup, archival, and editing. You can edit the CSV file on the desktop PC.