Mugen Sound
Koichiro Kamada Health & Fitness iPhoneiPadiPod touch
Mugen Sound is a free Health & Fitness app for iPhone and iPad by Koichiro Kamada. Requires iOS 26.0. Updated October 23, 2026.
- Price
- Free
- on the App Store
- Size
- 24 MB
- Age 4+
- Updated
- Oct 23
- 2026 · v1.32
Screenshots
About 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. Terms of Use: https://516k.net/en/terms/
What’s new
Version 1.32 · Updated October 23, 2026
Mugen Sound now supports iPhone Duo! iPhone Duo Support Use the full screen whether iPhone Duo is closed or open. On the large inner display, you can take in more of our soundscape photos at a glance, and panels like volume adjustment open at the same comfortable size as on iPad. Your sound keeps playing as you open and close it. A Toolbar Designed for iPhone Duo We rethought the layout from the ground up for how you'd actually use Mugen Sound on iPhone Duo. The side bar holds just the three essentials, Sounds, Playlists, and Settings, so Premium and the menu stay in view, always just one tap away. Categories and playlists are right where you expect them, inside each screen. Using iPhone Duo? If anything looks off, let us know from "A Request Regarding iPhone Duo" in Settings. We'll make it a top priority.
App privacy
The developer, Koichiro Kamada, reported these privacy practices to Apple.
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Usage Data: Advertising Data
Data Not Linked to You
The following data, which may be collected but is not linked to your identity, may be used for the following purposes:
- Usage Data: Advertising Data, Product Interaction
- Diagnostics: Crash Data, Performance Data
Used for: Third-Party Advertising, Analytics, App Functionality
Alternatives to Mugen Sound
Looking for apps like Mugen Sound? Here are 6 similar apps on the App Store. The highest rated is Sip - Dynamic Hydration (5.0/5), and all 6 are free to download.
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| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| Mugen Sound | – | Free | October 23, 2026 | |
| Sifatly: Kaloriya hisoblovchi | – | Free | Oct 14, 2026 | Compare |
| Solidarity Medical Insurance | – | Free | May 14, 2025 | Compare |
| Ikh Nayd Fitness | – | Free | Mar 14, 2026 | Compare |
| noiss - focus sounds | – | Free | Jul 24, 2026 | Compare |
| Sip - Dynamic Hydration | 5.0 / 5 (1) | Free | Sep 8, 2026 | Compare |
| BiteCalz: Snap Your Nutrition | 5.0 / 5 (5) | Free | Oct 22, 2026 | Compare |
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