90 Minute Sleep Cycles

Sleepcalculator.io is a smart sleep cycle calculator that determines optimal bedtimes or wake-up times using 90-minute sleep cycles and a 15-minute fall-asleep buffer. It offers six practical options for aligning with natural sleep rhythms, helping users avoid grogginess from interrupted deep sleep.

Naptick.com is a smart sleep system combining a bedside device and app that uses AI coaching, environmental sensors, and 1,000+ audio tracks to optimize your sleep environment and routines. It monitors room conditions like air quality and light, then provides personalized sleep schedules, voice-guid

BabySleepBot offers a personalized AI sleep‑training program for 4‑month‑to‑3‑year olds, delivering brief expert audio lessons, custom schedules, a 24/7 chatbot, assessments, and downloadable support documents that help parents set realistic sleep goals.

Lucidly uses Apple Watch heart‑rate, temperature, and motion data to detect REM sleep and provide haptic alerts. Users can adjust thresholds, vibration patterns, and trigger lucid‑dream techniques like WILD, WBTB, and DEILD to manage cycles, reduce anxiety, and enhance creativity.

Onoco AI predicts individualized nap windows for infants under one year using a neural‑network model trained on 1.5 million naps. It offers personalized next‑nap recommendations, configurable alerts, and syncs with the planner to help parents establish consistent, developmentally beneficial sleep pa

Lizzy Sleep App aids parents in managing their baby's sleep journey with personalized guidance, sleep tracking, and 24/7 AI chat support. It offers tailored programs for all stages of infant sleep, focusing on effective strategies and engagement.