# Slow Wave — 0.8Hz bedtime sound

> 0.8Hz bedtime sound (iPhone/iPad app by jisu an.)

- Source: https://appshunter.io/ios/app/slow-wave/id6790077865 (this page in markdown: same URL + `.md`)
- Developer: [jisu an](https://appshunter.io/developer/1832729860)
- Category: Health & Fitness, Lifestyle
- Price: Free
- Age rating: 4+
- Requires: iOS 16.4 · 40 MB
- Languages: American English
- Released: 2026-08-23
- Data updated: 2026-08-24
- User reviews in markdown: https://appshunter.io/ios/app/slow-wave/id6790077865/reviews.md

## What is Slow Wave?

Slow Wave is a focused audio app for winding down before bed.

Starting a session plays a sound rhythm that repeats slowly at 0.8Hz. Add a gentle background sound only when you want it, then adjust each layer separately to a comfortable level.

Features
- A base audio rhythm repeating at 0.8Hz
- Three optional background sounds
- Separate level controls for rhythm and background
- Automatic stop after 1, 2, 4, or 8 hours
- A one-time local wake-up alarm
- Audio that continues with the screen off
- Korean and English interfaces

All audio is included in the app, so Slow Wave works without an account or network connection. Slow Wave does not measure sleep or diagnose or treat any medical condition.


## Version history (last 1 release)

### 1.0.0 — 2026-08-23

No release notes.

## More apps by jisu an

- [WaveType - AI 음성노트](https://appshunter.io/ios/app/wavetype-ai/id6753307863)
- [Word Mask](https://appshunter.io/ios/app/word-mask/id6768038840)

All apps by jisu an: https://appshunter.io/developer/1832729860

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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 2026-08-24.*