HomeAppsHealth & FitnessCircadian: Your Natural RhythmApps like Circadian: Your Natural Rhythm Here are some great alternatives to Circadian: Your Natural Rhythm by Natural Cycles : Arcashift: Sleep & Balance β 4.0 Lifestack β 3.8 Calm Sleep Sounds & Tracker β 4.2 Alarm Clock - Timer - Reminder β 4.4 Biorhythms - Biological Cycles β 4.8 Life Rhythm - Biorhythm+Moon+Ξ± β 4.7 Biorhythms and Critical Days β 4.5 LifeCycles β 4.0 Time4Sleep: Sleep Cycles β 3.7 My Biorhythms β 4.6 Sleep as Android: Smart alarm β 4.6 Sleep Hours Alarm β 4.0 Sleep Calculator β 4.1 Gentle Wakeup: Sun Alarm Clock β 4.7 Sleep Cycle: Sleep Tracker β 4.3 Sunrise Alarm Clock: Wake up n β 4.0