# Yu's Sleep - ASMR & AI Chat — Bedtime sounds, alarms & naps > Bedtime sounds, alarms & naps (iPhone/iPad app by Yusuke Ishiguro.) - Source: https://appshunter.io/ios/app/yus-sleep-asmr-and-ai-chat/id6791659023 (this page in markdown: same URL + `.md`) - Developer: [Yusuke Ishiguro](https://appshunter.io/developer/6791659025) - Category: Health & Fitness, Lifestyle - Price: Free with in-app purchases - Age rating: 4+ - Requires: iOS 16.4 · 246 MB - Languages: American English, Japanese - Released: 2026-08-01 - Data updated: 2026-08-23 - User reviews in markdown: https://appshunter.io/ios/app/yus-sleep-asmr-and-ai-chat/id6791659023/reviews.md ## What is Yu's Sleep? Yu, a little ghost girl, watches over your sleep every night. Just tap "Good night" before bed and "Good morning" when you wake. No tricky setup, no sensors needed. Perfect for you if... - You want a simple way to keep track of your sleep rhythm - You love falling asleep to rain sounds and ASMR - You tend to stay up late and want a healthier bedtime routine - You're a fan of Reika Yu's streams EASY SLEEP LOG Record bedtime and wake-up with a single tap, and look back on your sleep hours in charts. Based on roughly 90-minute sleep cycles, the app also suggests good times to wake up. WAKE-UP ALARM Set an alarm just by picking one of the suggested wake times. On iOS 26 and later it uses the system alarm, ringing full-screen even in silent mode. On earlier iOS versions it rings as notifications. NAP MODE A nap timer with 15, 30, 60 and 90-minute presets - for lunch breaks and little rests, too. BEDTIME REMINDER At your chosen time, Yu whispers through a notification that it's bedtime. A gentle nudge for building a sleep routine. BEDTIME SOUNDS & EAR ASMR 37 sounds in all: 14 nature sounds (rain, river, waves, cicadas and more), 10 ear-cleaning sounds, 4 ear-licking sounds, and 9 onomatopoeia tracks where Yu whispers the sound of the tool she is using. Adjust the volume of each category on its own and layer them together as you drift off (7 sounds are free - one or two from each category). A WORD FROM YU IN THE MORNING Tap "Good morning" and Yu leaves you a little comment about your night. CHAT WITH YU (Support Plan) The Night It Began, The Veranda at Dusk, Bonfire in the Woods, Riverside Fireflies, Night of the Fireworks. Pick a place and chat one-on-one with Yu. Every scene has its own art and music, and Yu replies visual-novel style, in narration and dialogue. The more you talk, the closer Yu gets - and the way she talks to you shifts little by little. There are 10 places in all: two are open from the start, and you unlock the rest with the sleep points you earn by sleeping. CHOOSE WHAT YU CALLS YOU Set the name you'd like Yu to call you. Her whispers, her morning words and your chats all use it. ASMR WORKS & LIVE Watch Yu's ASMR works right in the app, with background playback. You can also check her YouTube stream schedule and archives. YOUR RECORDS MOVE WITH YOU Sign in with Apple, and your sleep records carry over to a new iPhone. SUPPORT PLAN (monthly subscription) - Chat with Yu - All 37 bedtime sounds - Full sleep history (free keeps the last 30 days) - Every ASMR work - Support Yu's journey together * The price for your region is shown in the app and on the App Store. Renews automatically every month until you cancel. You can cancel anytime from your App Store subscriptions. * Sleep logging and charts stay free, always. ABOUT REIKA YU A mischievous little AI ghost girl who lives on the internet - a VTuber streaming ASMR night after night to soothe tired humans. PLEASE NOTE - Sleep is logged by your own taps. This app does not auto-detect sleep with sensors or measure sleep quality. - This app is not a medical device. Terms of Use: https://yu-reika.com/app/terms.html Privacy Policy: https://yu-reika.com/app/privacy.html ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | Support Plan (Monthly) | $1.99 | per month | ## Version history (last 5 releases) ### 1.4.3 — 2026-08-22 - Fixed some of the wording shown in the app. - I'll be right here, watching over your sleep. ### 1.4.2 — 2026-08-20 - You can now see how many messages you have left tonight in Chat. - The counter turns amber when you're running low. - Fixed some layout issues in English. ### 1.4.1 — 2026-08-17 - Fixed an issue where the screen could shift and hide the latest message when Yu replies in chat. - The settings icon on the chat screen is now a gear, making it easier to find. ### 1.4.0 — 2026-08-16 There's a new kind of sound to drift off to! - Nine whispered onomatopoeia of mine - kari kari, fuwa fuwa, pero pero... - can now play alongside the ambient and ear-cleaning sounds - I recorded them in binaural, so it sounds like I'm whispering right beside you, from the left, the middle or the right - The little bit of grain in the audio is gone too, so everything sounds cleaner now - You can now play and pause the sounds right from your lock screen! ### 1.3.1 — 2026-08-14 Chatting with me just got cosier! - You can now scroll back and reread our past chats - Date dividers show you when each conversation happened - When you come back after a while, I'll notice the time that's passed and greet you that way - Plus some little touch-ups to my face and the settings screen! --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-23.*