40+ free tools to help you optimize sleep, track patterns, and relax
Find optimal bedtime based on 90-min sleep cycles
Evaluate your sleep quality comprehensively
Calculate when to sleep based on wake time
Find optimal wake times from sleep time
Track and calculate accumulated sleep debt
Calculate your body mass index
Calculate daily calorie needs
Daily water needs based on weight & activity
Track caffeine impact on your sleep
Recommended sleep hours by age
Countdown timer for bedtime reminders
Find optimal nap length for energy
Calculate optimal wake-up times
Convert time to decimal hours
Convert hours to 90-min sleep cycles
Calculate days between two dates
Generate calming bedtime affirmations
Generate soothing meditation mantras
Generate creative bedtime stories
Suggested white noise durations
Guided breathing timer for relaxation
Guided muscle relaxation exercise
Customizable meditation session timer
Guided yoga nidra session timer
Track sleep patterns with local storage
Track mood patterns affecting sleep
Track exercise impact on sleep
Suggested times to dim lights
When to stop screen time before bed
Last safe time for caffeine consumption
Optimal bedroom temperature guide
Optimal humidity levels for sleep
Evaluate your sleep quality
Checklist for optimal sleep environment