1)   Free and Easy Biorhythm Calculator 2.90 Free and easy biorhythm calculator. Knowing your biorhythms, you can be sure about what to expect from each day in order to succeed at business, or in sports, exams or job interviews, negotiating or dating. Be a winner in any situation! 2)   BioWIN 5.11 Biorhythm charting software. Features: Primary, Secondary and I Ching cycles, biocompatibility, profiles database, best match search, good/bad day search, clean and intuitive interface