Sleepcraft vs Sleep Pattern Lab

Sleepcraft reads your sleep data from Apple Health and breaks it down differently than most apps. It shows your sleep on a 12-hour clock face so you can see exactly when you got deep sleep, REM, light sleep, and awake periods. Instead of one combined sleep score, Sleepcraft gives each phase its own score — deep, REM, light, continuity, and regularity — so you know exactly what's working and what isn't. Scoring is calibrated to your age and sex. A 50-year-old man and a 25-year-old woman have different optimal deep sleep and WASO targets, based on clinical benchmarks from the NIH, CDC, and NHS. You can tag daily factors like late coffee, alcohol, or a hard workout and see how they affect not just your overall sleep, but each individual stage. Some patterns aren't obvious — for some people, ovulation can increase deep sleep, or a daytime nap might actually extend total sleep duration rather than shorten it. Sleepcraft surfaces these personal links so you're not guessing. It also connects your daytime active energy and HRV to nightly recovery, and uses your historical data to forecast tonight's sleep quality based on your current trends. All processing happens on your iPhone. No backend servers, no accounts. Your tagged factors and ratings sync through your own iCloud. Terms of Use (EULA): https://sleepcraft.app/privacy

Sleep Pattern Lab helps you explore the relationships between your sleep and your health, activity, and fitness data from Apple Health. Built for Apple Watch users, Sleep Pattern Lab analyzes your sleep records alongside selected health metrics to surface correlations across Total Sleep, Deep Sleep, and REM Sleep. See how patterns in movement, heart rate, recovery, exercise, daylight, mindfulness, and other Apple Health data may relate to the way you sleep. Sleep Pattern Lab presents your data clearly, with correlation values, sample counts, and statistical evidence included for each result. It gives you a more transparent way to explore sleep patterns while keeping the interpretation grounded in the numbers. Features include: - Sleep correlations for Total Sleep, Deep Sleep, and REM Sleep - Apple Health and Apple Watch sleep data support - Comparisons with heart rate, HRV, steps, exercise, calories, daylight, respiratory rate, VO2 Max, blood oxygen, mindfulness, and more - Adjustable date ranges for reviewing longer-term patterns - Clear correlation values and statistical evidence - 100% free to use - Private, on-device health analysis Your Health data stays on your device. Sleep Pattern Lab does not sell your data, share it with third parties, or use it for advertising or tracking. Sleep Pattern Lab is for informational use only. Correlations do not prove cause and effect and are not medical advice.