■ 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.