# Sleep Words for Overthinking — Calm audio for sleep

> Calm audio for sleep (iPhone/iPad app by Kengo Shimizu.)

- Source: https://appshunter.io/ios/app/sleep-words-for-overthinking/id6768289249 (this page in markdown: same URL + `.md`)
- Developer: [Kengo Shimizu](https://appshunter.io/developer/1896557531)
- Category: Health & Fitness, Lifestyle
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 15.1 · 461 MB
- Languages: American English
- Released: 2026-05-15
- Data updated: 2026-08-18
- User reviews in markdown: https://appshunter.io/ios/app/sleep-words-for-overthinking/id6768289249/reviews.md

## What is Sleep Words for Overthinking?

Sleep Words for Overthinking is an audio-first sleep support app for people who tend to overthink at night.

Just listen to the words as they play, and picture each one softly.
The app is designed to help you take a little distance from looping thoughts and spend the time before sleep more calmly.

Because the experience is mainly audio-based, you do not need to keep looking at your phone.
It is simple and easy to start, even if meditation apps have felt difficult for you.

How to use it:

1. Start a session
2. Gently picture each word as it plays
3. When you feel sleepy, simply let yourself rest

You can also adjust the voice, speaking style, playback speed, session duration, word interval, and BGM.

Main features:

・Automatic word audio playback
・Voice selection
・Speaking style selection
・Playback speed selection
・Session duration settings
・Word interval settings
・BGM settings
・Separate volume controls for word audio and BGM
・Favorites
・Word blocking settings
・Audio playback while the screen is locked

Some features are available with Premium.
Premium unlocks more words, voices, BGM, favorites, and expanded word blocking settings.

Recommended for nights when:

・Your thoughts keep going after getting into bed
・You do not want to keep looking at your screen before sleep
・You want calm audio to help settle your mind
・You want something simple with minimal setup
・You wake up during the night and want a gentle way to rest again

This app is inspired by the idea of Cognitive Shuffle / Serial Diverse Imagining.
It is intended as a general sleep, rest, and relaxation support app.
It is not intended for medical diagnosis, treatment, or prevention.
If you have concerns about your sleep or health, please consult a medical professional.
Terms of Use (EULA):
https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Privacy Policy:
https://sites.google.com/view/hitsujiga0hiki-privacy-policy/

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Premium | $4.99 | per month |



## Version history (last 5 releases)

### 1.0.6 — 2026-08-11

- Fixed an issue where spoken word audio could fail to play.
- Improved the voice settings display.
- Made minor stability improvements.

### 1.0.5 — 2026-06-30

* Updated the App Store display name.
* Refined some wording to make the app easier to understand.
* Made minor display and stability improvements.

### 1.0.4 — 2026-06-18

* Updated the App Store display name.
* Made minor display and stability improvements.

### 1.0.3 — 2026-06-11

Improved the “Rate the App” and “Contact Us” pages in the side menu.
Made minor display and stability improvements.

### 1.0.2 — 2026-06-03

・Improved audio playback stability while the screen is locked.
・Improved playback behavior when opening settings during a session.
・Adjusted BGM playback and word audio stability.

## Apps similar to Sleep Words for Overthinking

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [nighty - 認知シャッフル睡眠アプリ](https://appshunter.io/ios/app/nighty/id6752117167) | — | Free | Health & Fitness |
| [Oyasumi Shuffle](https://appshunter.io/ios/app/oyasumi-shuffle/id6759636779) | — | Free | Health & Fitness |
| [Cognitive Shuffle: No Insomnia](https://appshunter.io/ios/app/cognitive-shuffle-no-insomnia/id6760416628) | — | Free | Health & Fitness |
| [認知シャッフル睡眠法 - SleepWords](https://appshunter.io/ios/app/sleepwords/id6759151074) | — | Free | Health & Fitness |
| [eazynap: Cognitive Shuffle](https://appshunter.io/ios/app/eazynap-cognitive-shuffle/id6754529847) | — | Free | Health & Fitness |
| [M for Motivation: Self Growth](https://appshunter.io/ios/app/m-for-motivation-self-growth/id6478235337) | 5.0 (7) | Free | Health & Fitness |

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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 2026-08-18.*