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.
Schlafzyklus-Rechner
Entschlüssele deine Schlafzyklen. Finde optimale Zeiten basierend auf der Wissenschaft der 90-Minuten-Zyklen.
Koffein-Stopp-Rechner
Finde heraus, wann du auf Koffein verzichten solltest für bessere Schlafqualität. Basierend auf Halbwertszeit-Wissenschaft.
Power-Nap Timer
Entschlüssele die Wissenschaft des Nickerchens. Evidenzbasiertes Timing zur Vermeidung von Schlafträgheit.
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.
Atemübung
Guided breathing patterns to calm your nervous system before sleep.
Weißes Rauschen & Schlafgeräusche
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