Biorhythms and Critical Days vs BiorhythmX

Biorhythms and Critical Days is personal biofeedback software that analyzes a user's biorhythms to identify critical, positive, and negative days. It creates forecasts and charts to visualize physical, emotional, intellectual, intuitive, and overall cycles.

BiorhythmX is a biofeedback and neurofeedback software tool that allows users to track and analyze multiple bio-signals and neuro-data in order to optimize health, wellness and performance.