Biorhythms are three cycles said to start at birth and repeat on fixed periods:
Each curve swings between +100% (peak) and -100% (low), so a value near either end means that trait is running strong in its direction. Where a curve crosses the zero line is a critical day, a transition when that trait is least predictable.
The chart always spans 7 days before and after today. The bold vertical line and the dots mark today.
Biorhythm theory isn't scientifically supported. Treat it as a fun pattern to check in on, not a forecast.
Curvewise works offline once installed to your Home Screen. On iPhone/iPad, in Safari:
Must be Safari (not Chrome) on iOS. Your people are saved on this device. Open once online so the app can finish caching itself; after that it works with no connection.