# HyperbolicTimeChamber

> Mix Hz-band sounds from gamma to delta waves into your own focus blend

Canonical page: [https://chrome-stats.com/d/com.may.focussound](https://chrome-stats.com/d/com.may.focussound)

## Overview

- **ID:** `com.may.focussound`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** AKCS
- **Category:** MUSIC\_AND\_AUDIO
- **Downloads:** 31
- **Version:** 1.2.0
- **Last updated:** 2026-08-13
- **First published:** 2026-08-10
- **Publisher country:** KR
- **Size:** 43 MB
- **Data as of:** 2026-09-19
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.may.focussound)
- **Privacy policy:** [https://yongholee87.github.io/focussound-privacy/](https://yongholee87.github.io/focussound-privacy/)

## Description

Studying, working, or taking a short break — pick and mix the sounds that<br>fit the moment.<br><br>The app is built from two kinds of sound: &quot;core sounds&quot; — binaural beats<br>(two slightly different tones, one per ear) and white/pink noise, tuned<br>across bands from gamma (40Hz) down to delta (3Hz) — and &quot;ambience&quot;: natural<br>recordings like rain, ocean waves, and a crackling fireplace. Mix the two<br>freely to build your own combination.<br><br>✦ Key features<br>- 9 core sounds + 12 ambience sounds, play several at once with individual<br>  volume control<br>- Pomodoro timer to manage focus and break periods<br>- Save your favorite combinations as presets<br>- Track today&#39;s and total focus time<br>- Keeps playing in the background even with the screen off<br><br>✦ Being upfront with you<br>Research on how binaural beats affect focus is still ongoing, and results<br>can vary from person to person. This isn&#39;t an app that promises guaranteed<br>results — it&#39;s a tool for comfortably experimenting with different<br>frequency bands and natural sounds.<br><br>One new core sound unlocks for free every month, and all 12 ambience<br>sounds are free.

## Rankings

- #2,454,460 — Overall

## Permissions and access

### Permissions

- `android.permission.ACCESS_NETWORK_STATE`
- `android.permission.FOREGROUND_SERVICE`
- `android.permission.FOREGROUND_SERVICE_MEDIA_PLAYBACK`
- `android.permission.INTERNET`
- `android.permission.POST_NOTIFICATIONS`
- `android.permission.VIBRATE`
- `android.permission.WAKE_LOCK`
- `com.android.vending.BILLING`
- `com.android.vending.CHECK_LICENSE`
- `com.may.focussound.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`

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Source: [Chrome-Stats](https://chrome-stats.com/d/com.may.focussound)