Mugen Sound

■ What is Mugen Sound?

Mugen Sound is the ultimate ambient sound app that enriches your life through the power of sound. Combining cutting-edge audio content with advanced playback technology.

■ Focus, Sleep, and Noise Masking—All with a Single Tap

Mix natural sounds with color noise to create your perfect environment.
Automate your routine with custom durations like "25 min focus + 5 min break."
Seamless infinite loops that never break immersion.

■ Unique Features

▼ Mix Multiple Sounds Freely
Ocean waves + pink noise, forest sounds + brown noise—
Create your ideal soundscape with any combination you like.

▼ Set Individual Playback Duration for Each Sound
"25 minutes of brown noise for focus, then 5 minutes of ocean waves to refresh."
With playlist functionality, customize the duration for each sound.
Perfect for Pomodoro Technique or bedtime routines—all automated.

▼ Uninterrupted Immersion
Smooth, seamless infinite loops with no jarring transitions.
Ambient sounds continue endlessly without interruption.

▼ Professional-Grade Binaural Recording
Created in collaboration with okidesign, a sound design company.
Recorded in locations across Japan—Hinuma in Ibaraki, Namie in Fukushima, Sakura in Chiba—
these binaural recordings make you feel like you're actually there when listening with headphones.

▼ Visual Soundscapes That Soothe
Beautiful visualizers (toggle on/off) respond to sound frequencies and move dynamically.
Deep immersion through both sight and sound.

■ Rich Feature Set

- Mix multiple sounds freely
- Create playlists with custom durations
- Curated natural sounds and color noise (6 types)
- Fine-tune volume for each sound individually
- Proprietary auto-balancing for consistent volume levels
- Play simultaneously with other apps (layer music + ambient sounds)
  *Subject to other app specifications
- Pomodoro timer with interval notifications
- Sleep timer (auto-stop)
- Offline playback support
- No sign-up required

■ Perfect For

【Work & Study】
Automate 25-min focus + 5-min refresh (Pomodoro)

【Sleep】
Pink noise + rain sounds + 60-min timer for better sleep

【Noise Masking】
White noise softens ambient noise in cafes or libraries

【Meditation & Yoga】
Natural sounds for moments of calm

【Baby Sleep Aid】
Gentle sounds support peaceful sleep

■ Sound Library

▼ Natural Sounds Collaboration Collection
Spring in Sakura, tea fields and streams of Sasama, Lake Toya, Lake Hinuma shoreline...
Professional binaural recordings of Japan's authentic soundscapes
More sounds coming soon

▼ Complete Color Noise Collection
White noise, pink noise, brown noise,
gray noise, violet noise, blue noise
*Popular choices for focus and sleep

■ Refined Design

Beautiful, intuitive interface that's easy to use.
Carefully selected photos that capture the essence of each sound.
A calming experience every time you use it.

■ Download Now

Focus. Relaxation. Sleep.
Everything you need, right in your hands.

■ Go Premium with Free Trial for Even More Freedom

- Ad-free experience
- Add your own sounds (WAV/MP3/AAC supported)
  *Compatible with audio files (DRM-free) in iCloud Drive or Files app

Cancel anytime in Settings.
Subscription auto-renews after free trial ends.
Pricing available in-app.