Oyasumi Shuffle

You're in bed, but your mind won't stop — replaying today, worrying about tomorrow. The harder you try to sleep, the more awake you feel. Sound familiar?

Oyasumi Shuffle is a sleep support app that helps you drift off — just by listening.

WHAT IS THE COGNITIVE SHUFFLE? A sleep onset technique by cognitive scientist Dr. Luc Beaudoin. By listening to random, unrelated words, your racing thoughts gently unravel. You don't have to "clear your mind." Just let the words wash over you, and your brain naturally shifts into sleep mode.

HOW IT WORKS

1. Pick a category
2. Press play
3. Put your phone down and close your eyes

That's it.

5,000+ JAPANESE WORDS ACROSS 20 CATEGORIES Choose a category to match your mood:

Flowers / Nature / Ocean / Space / Weather Animals / Food School Memories / Childhood Games / Festivals / Seasonal Events / Folktales Hot Springs / Gardens / Camping & Outdoors Music & Art / Sports / Travel / History & Culture / Vehicles

Fall asleep to the names of flowers one night, drift off into folktales the next — picking a different category each night becomes a small bedtime ritual.

SOOTHING BGM 17 BGM tracks across 4 genres: Ambient, Melodic, Piano, and Strings. Together with the word narration, they create a gentle soundscape for sleep.

ABOUT THE VOICE Words are narrated in Japanese using AI voice synthesis. Some accent or pronunciation may differ slightly from natural speech.

CUSTOMIZE YOUR WAY

• Session duration: 5 to 120 minutes
• Word interval: 3 to 15 seconds
• Speech speed: 0.5x to 1.5x
• Independent volume for words and BGM

GENTLE BY DESIGN

• Background playback — audio continues when you close the screen
• Dark theme — easy on your eyes in a dark room
• Large buttons — effortless to use when you're sleepy
• Accessibility — VoiceOver, Dynamic Type, and Reduce Motion

OYASUMI SHUFFLE PRO Unlock everything with Pro:

• All 20 word categories (free: 2 categories)
• All 17 BGM tracks
• Priority access to new content

Monthly and annual plans available. Payment charged to your Apple ID. Auto-renews unless cancelled at least 24 hours before period ends. Manage in iOS Settings > Apple ID > Subscriptions.

PLEASE NOTE This app is a sleep support and relaxation tool based on the cognitive shuffle technique. It is not a medical device and does not provide medical advice or treatment. Please consult a healthcare professional if you have sleep concerns.

Privacy Policy: https://tailwind8.github.io/mindShuffle/privacy-policy Terms of Use: https://tailwind8.github.io/mindShuffle/terms-of-service