Otoyoi — Spatial Sound Layers

Mix ASMR & play in background

$3.99 · Designed for iPad. Not verified for macOS.

Play music, voice and ASMR together — per-track volume, speed, EQ and placement. Keep listening while you watch videos or game. A quiet tool for people who love sound. Music, voice and ASMR — all playing at once. Otoyoi plays as many audio files as you like, together. A whisper at your ear, rain in the distance — you decide where every sound sits, and move it with a fingertip. ■ Ways to listen - Layer rain or a campfire under your favorite ASMR and voice works, at just the balance you like - Turn on "Play alongside other apps" and keep listening while you watch videos or play games - Build your own sleep soundscape from streams, birds and wind - Blend a personal ambient mix for work and focus - Practice an instrument or a language: change the speed and compare a reference with your own recording ■ Move sounds with your finger Drag a sound on the pad to move it left, right, up or down; pinch to bring it closer or push it away. Put on headphones, and each sound plays from right where you placed it. ■ Fine-tune every track - Volume (up to 200%) and speed (0.25–2x, pitch-preserving) - 5-band equalizer - Repeat, and Swap L/R (play a stereo track with its left and right channels exchanged) - Queue: combine multiple audio and video files into one track and play them in order (great for split audio works) - Seek anywhere, and play or pause each track on its own ■ True-to-source stereo Binaural ASMR and voice works lose their magic when they are processed. Otoyoi's default mode preserves the original stereo image and only adjusts balance and distance. Want full 3D placement instead? Switch any track to spatial mode. ■ Videos, audio only Audio from video files works just like any other track. Hide the picture with a single tap and keep just the sound playing. ■ Built for bedtime - Sleep timer that ends in a slow fade-out - Auto-pause when your headphones disconnect - Lock Screen controls, plus 10-second back and 30-second forward skips - Resumes where you left off ■ And more - Head tracking with supported earphones - Export your mix as an m4a file and play it in any player - Save and switch pads (scenes); back up and restore everything - Four dark themes that belong to the night - iPhone & iPad (two-column layout on iPad) ■ First launch Otoyoi ships with "Camp Morning" — a demo of self-made ambient sounds (Babbling Brook, Songbirds, Campfire) already placed in space. Put on your headphones, press play, and try moving the sounds with your finger. ■ Good to know - Play only files you own or are licensed to use privately - No data collection. Your audio never leaves your device - Headphones recommended Music, voice, ASMR — a small, quiet tool for people who love sound.

Ratings & Reviews

  • This app hasn’t received enough ratings or reviews to display an overview.

Added "Queue": combine multiple audio and video files into one track and play them in order — handy for split audio works. Videos show their picture only while that item is playing. Added "Swap L/R" to play a stereo track with its left and right channels exchanged. You can now collapse the pad to give the track list more room (iPhone). You can now hide a video's picture with one tap and play just its audio. The file picker now remembers where you last browsed (on first use, it opens a dedicated folder where you can place audio and video files ahead of time). That folder now comes with four sample sounds — stream, songbirds, campfire, and a new rain sound — ready to use (the Settings option to re-add the demo scene has been removed). The phase inversion and time delay features have been removed.

Version 1.1

The developer, Mahiro Murata, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Seller
    • Mahiro Murata
    Size
    • 7.9 MB
    Category
    • Music
    Compatibility
    Requires iOS 17.0 or later.
    • iPhone
      Requires iOS 17.0 or later.
    • iPad
      Requires iPadOS 17.0 or later.
    • Mac
      Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    English and 3 more
    • English, Japanese, Korean, Traditional Chinese
    Age Rating
    4+
    Copyright
    • © 2026 Mahiro Works
  • Privacy Policy

    • Supports

    • Family Sharing

      Up to six family members can use this app with Family Sharing enabled.