Sleep Hygiene Tools

A collection of client-side calculators and analytical models to help contextualize your sleep data without sending your personal health metrics to an external server.

REM Deficit Estimator

Calculate your estimated REM sleep debt based on total sleep duration and clinical age-based architectural norms. (Note: Wearable REM data is often inaccurate; this tool uses clinical baselines based on Total Sleep Time).

Age Group

Average Hours Slept per Night (Past 7 Days)

Analysis Output

Expected REM

Estimated Actual

Weekly REM Deficit

JavaScript is required for the interactive calculator. Below is the static clinical baseline table for REM estimation.

Age Group

Expected REM % of TST

18-25

22 - 25%

26-45

20 - 24%

46-65

18 - 22%

65+

15 - 20%

Device Optimization Tools

The Device Selector

Input your physiological priorities and budget constraints to receive a mathematically ranked wearable recommendation.

Accuracy Comparator

Select two devices side-by-side to compare their Pearson correlation coefficients for N1, N2, N3, and REM against PSG.

Circadian Drift Calculator In Dev

Upload your wearable's raw sleep-onset data to calculate your chronotype drift over a 30-day period.