# Yoinemu - Sleep & Ambient — Japanese ambient sleep sounds

> Japanese ambient sleep sounds (iPhone/iPad app by Takuya Ozu.)

- Source: https://appshunter.io/ios/app/yoinemu-sleep-and-ambient/id6765696571 (this page in markdown: same URL + `.md`)
- Developer: [Takuya Ozu](https://appshunter.io/developer/1896035414)
- Category: Health & Fitness, Lifestyle
- Price: Free
- Age rating: 4+
- Requires: iOS 15.1 · 79 MB
- Languages: American English, Japanese
- Released: 2026-06-05
- Data updated: 2026-08-11
- User reviews in markdown: https://appshunter.io/ios/app/yoinemu-sleep-and-ambient/id6765696571/reviews.md

## What is Yoinemu?

Yoinemu is a minimalist ambient sound app for falling asleep. Designed in Japan, completely free, with no ads and no tracking. Just open it, choose a sound, and let yourself drift off.

WHY YOINEMU
Most sleep apps keep adding features. Yoinemu does the opposite. It does one thing — help you fall asleep — and removes everything that gets in the way. Dark, quiet artwork made for nighttime. No sign-up. No subscription. No noise.

A SLOWING BREATH
On the player, a quiet animation breathes a little slower over time, gently guiding your own breathing down toward sleep. You don't have to follow it. It's just there, in the background, like a calm presence in the dark.

15 CAREFULLY CURATED SOUNDS, ACROSS 5 CATEGORIES
Rain
- Noki no Ame — rain on the eaves
- Doshaburi — heavy downpour
- Yoru no Kosame — light rain at night
- Mado Utsu Ame — rain on the window
Water
- Kawa no Se — a river's shallows
- Yose-nami — waves rolling ashore
- Mizuumi no Fuchi — the edge of a lake
Forest
- Yoru no Mori — forest at night
- Kozue no Kaze — wind in the treetops
- Ake no Mori — forest at dawn
Fire
- Takibi — a campfire
- Andon — the glow of an andon lamp
Noise
- Hakuu — white noise
- Yaki — pink noise
- Jinari — brown noise

Each sound keeps its Japanese name, with a short English description so you always know what you're hearing.

FALL ASLEEP, THEN STOP GENTLY
Set a sleep timer and choose a gentle fade. Instead of cutting off abruptly, the sound eases away along a soft S-curve — "stop gently over 10 minutes" — so nothing jolts you awake just as you're drifting off.

QUIET BY DESIGN
- Designed for falling asleep, not for staring at a screen
- Dark artwork that won't light up your room
- Available in English and Japanese
- No accounts, no ads, no tracking
- Every sound is credited to its creator in the app

INDEPENDENT, AND TRANSPARENT
Yoinemu is built and maintained by a single independent developer in Japan. Privacy Policy and Terms of Service are available in both English and Japanese.

SUPPORT
Inquiries: Japanese preferred. English supported on a best-effort basis. support@yoinemu.app

FROM JAPAN, WITH CARE
Yoinemu is shaped by a Japanese sense of "yoi no nemuri" — the sleep of early evening. Its name, its Japanese sound titles, and its pared-down artwork all come from that quiet world. We hope it helps you end your day a little more gently.


## Version history (last 5 releases)

### 1.1.1 — 2026-06-06

More of the app now appears in English, including tab labels and several screens.

### 1.1.0 — 2026-05-31

Yoinemu now supports English. You can switch between English and Japanese anytime from the Settings screen.

### 1.0.7 — 2026-05-10

機内モードで蓄え済み音源を再生できるようになりました。
文字サイズ拡大時のレイアウト調整(アクセシビリティ強化)。

### 1.0.6 — 2026-05-10

機内モードでも蓄え一覧が見えるようになりました。
音源切替の体感を改善しました。

### 1.0.5 — 2026-05-09

アプリの安定性を改善しました

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*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 2026-08-11.*