Tools to decode your sleep
Eight browser-based utilities to understand and improve your sleep. Each tool is built on sleep science research—no signup, no clutter.
Sleep and wind-down utilities
Use the tool that matches the exact job you need to do right now.
Calculateur de Cycles de Sommeil
Décode tes cycles de sommeil. Trouve les horaires optimaux basés sur la science des cycles de 90 minutes.
Calculateur d'Arrêt Caféine
Découvre quand arrêter la caféine pour une meilleure qualité de sommeil. Basé sur la science de la demi-vie.
Minuterie de Sieste
Décode la science de la sieste. Timing basé sur l'évidence pour éviter l'inertie du sommeil.
Sleep Debt Calculator
Track your weekly sleep deficit and get a personalized recovery plan.
Jet Lag Planner
Get a personalized light exposure schedule to adjust to new time zones faster.
Chronotype Quiz
Discover your sleep chronotype and ideal daily schedule in 2 minutes.
Exercice de Respiration
Guided breathing patterns to calm your nervous system before sleep.
Bruit Blanc et Sons de Sommeil
Steady background sounds to mask disruptive noise and improve sleep quality.
Every tool is grounded in sleep research
DreamDecrypt tools translate peer-reviewed sleep science into practical utilities. From circadian rhythm research to caffeine pharmacokinetics, each feature is based on established scientific principles.
- • Sleep cycles: Based on the 90-minute ultradian rhythm research by Nathaniel Kleitman
- • Caffeine half-life: Uses 5-6 hour elimination pharmacokinetics from clinical studies
- • Chronotypes: Based on circadian phenotype research and the Munich Chronotype Questionnaire
- • Jet lag: Applies phase response curve (PRC) principles for circadian adjustment
Start with the tool that solves the immediate problem, then leave when you are done.
Open Sleep Calculator