rem sleep calculator

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About this app

WHAT IS REM SLEEP?
• REM (Rapid Eye Movement) sleep is a stage in the sleep cycle when you dream and your brain is most active. Deep sleep and light sleep alternate in cycles, and REM is known for vivid dreaming and brain activity.

• Waking up at the end of a REM sleep cycle (usually every 90 minutes) helps you feel more refreshed and less tired in the morning.

Key Features:
• Recommends the best alarm time based on your bedtime, so you wake up at the end of a REM cycle
• Automatically calculates multiple optimal wake-up times according to your REM sleep cycles
Updated on
May 30, 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
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Everyone
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About the developer
한다혁
hantahyeok@naver.com
South Korea