Stereo Microphone

Stereo Microphone Icon
Stereo Microphone
Ryouta Kira
Download on the App Store

With this app, you can select input in DAWs like Cubasis where input selection is not available. Please mute within this app and turn on the microphone.


Use your iPhone/iPad as a microphone and output sound to headphones or speakers. You can also use it to record audio instead of playing sound.
The app comes with four built-in effects. Stereo input is available on compatible devices only.

Please note that this app was created just for my personal use, and I cannot guarantee its performance on devices I do not own.

Included effects:

  • Pitch Shifter
    You can adjust the pitch in semitone increments.
  • Chorus
    Applies a stereo chorus effect. Choose from a selection of presets.
  • Reverb
    A built-in reverb effect provided by iOS/iPadOS. Choose from a selection of presets.
  • 10-Band Equalizer
    An equalizer with 10 frequency bands. You can emphasize or attenuate specific ranges of sound.

Supported devices with stereo input (unconfirmed):

  • iPhone XS or later
  • iPhone SE 2nd generation or later
  • iPad Pro 11-inch 1st generation or later
  • iPad Pro 12.9-inch 3rd generation or later

Recording file formats:

  • MPEG4 AAC 44.1kHz 192kbps Stereo (.m4a)
  • MPEG4 AAC 48kHz 192kbps Stereo (.m4a)
  • MPEG4 AAC 44.1kHz 96kbps Stereo (.m4a)
  • MPEG4 AAC 32kHz 64kbps Stereo (.m4a)
  • PCM 44.1kHz 16bit Integer Stereo (.wav)
  • PCM 48kHz 16bit Integer Stereo (.wav)
  • PCM 44.1kHz 32bit Float Stereo (.wav)
  • PCM 48kHz 32bit Float Stereo (.wav)

If you are using an external stereo microphone, please set the input channel to stereo in the settings.

Please note that the screenshots are simulated images.

Stereo Microphone Icon
Stereo Microphone
Ryouta Kira
Download on the App Store

Release History (Year-Month-Day JST, UTC+9)

v1.2.1 (2024-05-20)

– Added haptic feedback for start/stop actions.
– Fixed an issue to ensure proper file creation when the app is manually closed during recording.
– Other fixes.

v1.2 (2024-05-17)

– Added a pause function for recording.
– Added MagicTap to start/stop performance.
– Other fixes.

v1.1.4 (2024-05-16)

Implemented a workaround to prevent the phenomenon of automatic switching of output destinations.

v1.1.3 (2024-04-19)

In the latest environment, it appears that Bluetooth speaker and wired external microphone cannot be used at the same time. A built-in microphone and Bluetooth speaker can be used at the same time.
Fixed an issue that prevented from using “Voice” mode.

v1.1.2 (2023-07-06)

Fixed a crash bug under certain conditions.

v1.1.1 (2023-05-30)

New features:
– The app stops playing/recording when disconnecting speaker/headphones.
– You can select the stereo microphone orientation.
– The Live/Record screen is restored on launch.

Other some improvements.

v1.1 (2023-05-22):

New features:
– Auto Gain Control
– Noise Reduction
– System Voice Processing

v1.0.2 (2023-05-18):

The buffer size settings row was shifted.

v1.0.1 (2023-05-18):

Added buffer size settings.

v1.0 (2023-05-18)

Initial release.