90Sleep is a smart app designed to optimize your sleep using the scientific R90 method of 90-minute sleep cycles and 24-hour circadian rhythm tracking.
Key Features:
• R90 Cycle Calculator: Plan when to wake up to feel energized without sleep inertia.
• Reverse Calculator: Choose your desired wake-up time and discover your ideal bedtime.
• 24-Hour Circadian Rhythm: Visualize your biological solar phases (Awakening Peaks, Rest Windows, Melatonin).
• R90 Native Alarm: Gradual snooze with smart full-screen wake-up.
• Bedtime Reminders: Automatic notification 15 minutes before your ideal bedtime.
• R90 Power Nap: Quick 30-minute recovery without interrupting your nighttime sleep. • Total Privacy: All data remains secure on your device without mandatory registration.
Optimize your rest by waking up at the end of your sleep cycles R90.