First described in the late 1800s, the term biorhythm refers to the rhythmic cycles that affect a persons performance in various areas such mental and physical ability and emotional activity.

Biorhythm Calculator provides a quick and easy way to see a one month outlook based on accepted biorhythm cycles. It stores the last birthdate entered and always opens to the current date so simply launching the app provides up to date information. Convenient controls are provided to look ahead and back a week at time allowing you to quickly assess future and past tasks. Biorhythms can be calculated for any date in the future or past by entering the information directly.