# Stereo Microphone — Megaphone and Audio Recorder

> Device microphone and audio recorder with built-in effects and multiple recording formats. (iPhone/iPad app by Ryouta Kira.)

- Source: https://appshunter.io/ios/app/stereo-microphone/id6449208745 (this page in markdown: same URL + `.md`)
- Developer: [Ryouta Kira](https://appshunter.io/developer/862984358)
- Category: Utilities, Music
- Price: $2.99
- Rating: 4.50/5 from 8 App Store ratings · 18 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.0 · 3 MB
- Languages: American English, Japanese
- Released: 2023-05-17
- Data updated: 2026-08-23
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/stereo-microphone/id6449208745/reviews.md

## What is Stereo 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.

The microphone on the iPhone is positioned vertically, so by using it in landscape orientation, you can experience a greater sense of stereo sound.

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

Voice preprocess:
- System Voice Processing
- Noise Reduction
- Auto Gain Control

Included effects:
- Pitch shifter
- Chorus
- Reverb
- 10-band equalizer

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, Up to 24 hours)
- MPEG4 AAC 44.1kHz 128kbps Stereo (.m4a, 24h)
- MPEG4 AAC 48kHz 192kbps Stereo (.m4a, 24h)
- MPEG4 AAC 48kHz 256kbps Stereo (.m4a, 24h)
- MPEG4 AAC 48kHz 320kbps Stereo (.m4a, 24h)
- MPEG4 AAC 44.1kHz 96kbps Stereo (.m4a, 24h)
- MPEG4 AAC 32kHz 64kbps Stereo (.m4a, 24h)
- PCM 44.1kHz 16bit Integer Stereo (.wav, 6h)
- PCM 48kHz 16bit Integer Stereo (.wav, 6h)
- PCM 44.1kHz 32bit Float Stereo (.wav, 3h)
- PCM 48kHz 32bit Float Stereo (.wav, 3h)

* You can add a timecode when you use a PCM format.

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. The actual display may differ.
- This app and descriptions contain machine translated text.

## Key features

- Device as microphone
- Audio recording
- Pitch shifter effect
- 10-band equalizer
- Multiple recording formats
- Noise reduction
- System voice processing

## Recent user reviews (10 of 18)

All indexed reviews: https://appshunter.io/ios/app/stereo-microphone/id6449208745/reviews.md

### 5/5 — 素晴らしい

*2026-07-12*

レコーダーとして使ってるけど外部マイクが名称で表示されるし、デフォルトのファイルアプリと連携するので分かりにくい自前のファイル管理などよりは余程勝手がいい。

### 3/5 — Live monitoring missing

*2026-03-28*

Amazing app however useless for me bc I cant monitor the sound in realtime (even w normal delays) on my BT headphones

**Developer response:** Go to "Live" and turn on the Mic to start monitoring. Please check that the output is not muted (the bottom left icon).
Please note that Bluetooth headphones have much latency. It is a hardware restriction. Why you feel no latency when you watch videos is because sound is sent a little bit ago and some of latency are added for the screen.

### 5/5 — 非常に良いです

*2026-01-26*

非常に素晴らしいアプリで単体レコーダーは使わなくなりました
質問なのですがiOSを26.2にしたらプチプチノイズが録音に入るようになりました
OSのバージョン関係していますでしょうか？

**Developer response:** 返信が遅くなりまして、申し訳ありません。
OSの変更による影響の可能性はあります。回避策として、バッファーサイズを増やしてみていただけないでしょうか。

### 5/5 — Recommended app!

*2026-01-24*

This is a great app to record from different sources. I tried it to record voice in stereo with two DJI Mic Minis. Does work on two channels with iPhone 16 Pro. The receiver is connected via USB-C. Sources can be selected within the app, also the input level. Many other functions to tweak the sound and recording codecs etc.
Totally worth the 2,99€.

Wishes to the creator: Please make input level monitoring available before recording. Also please a much bigger VU-meter for the levels, full screen horizontal with db scale. Thanks :)

**Developer response:** Thank you for your review. To monitor the input level before recording, go to the Live screen, mute output, and turn on speaker. After that, you can go to the Record screen.
I will consider VU meter though I don't promiss the function will be implemented or not.

### 5/5 — No complaints!

*2025-09-25*

Great for spur of the moment field recordings when you don’t have mic equipment on you, but still want to capture quick audio in stereo. Easy to use and lots of tweak-able parameters.

### 5/5 — Widgets please

*2025-07-14*

Nice little app.

Please add support for the .CAF or .BWF file format.

Also a "Record on launch” would be greatly appreciated + a recording/live Mic widget.

Could it be possible to record all the device Mics at the same time (for Surround recordings)?

🙏

**Developer response:** Thank you for reviewing.
I will consider your requests but I don't promise it.

### 5/5 — 宅録ナレーションに最適

*2025-04-02*

iPhone内部マイクや、USB外部マイクを使って録音とモニターがコントロールできるアプリです。ファイル名も連番に対応しているので宅録ナレーターさんに最適です。
USB外部マイクもかなり実験を進めてますが、iPhone内蔵マイクも優秀ではあるので、このアプリで静かな部屋であればナレーション録音可能です。開発者様素晴らしいアプリをありがとうございました♪

### 5/5 — シンプルだが過不足ない

*2025-03-04*

入力と出力を個別に選択できる機能を提供している数少ないアプリ。拡声器やレコーダーとしてはもちろん使えます。
便利な使い方として、音声入力用のケーブルと出力用のbluetoothイヤホンを使って、機内で映画を見るときにスマホをトランスミッターとして使うことも出来ます。
改善してほしい点として、通知の読み上げが来た時に音声が通知されたアプリに奪われてしまった後、このアプリに自動では戻ってきませんので、改善してもらえると嬉しいです。

**Developer response:** 高評価レビューありがとうございます。一応ご提案の内容でトランスミッターにはなるのですが、リアルタイム音声入力をBluetoothイヤホンに飛ばす場合は、音声の遅延が大きいことが予想されます。ご注意ください。

### 5/5 — 機能の要望

*2024-12-17*

2ヶ月間ほぼ毎日使用しています。
簡単な操作かつ一通り必要な機能が揃っており、とても使いやすいためこれからも使用していきたいと思っています。

そこで見つけた不便な点についてです。

・メールなどの開発者への連絡先がない
・AACの場合192kbpsまでしかない
・保存先をiCloudなどへ変更できない
・録音失敗時の特別な表示がない

ーーーーーーーーーーーーー
設定画面などアプリ内に連絡先情報がないため、このように要望をレビューに書く必要がある
ーーーーーーーーーーーーー
AACで256や320kbps録音をしたい
wavではファイルサイズが大き過ぎるため
ーーーーーーーーーーーーー
私の場合、録音した音声をPCに転送するためにiCloudを使用しており、毎度コピーする必要があるため
ーーーーーーーーーーーーー
他のアプリでマイクが使用されている時など、録音に失敗している時に、「カウントダウン中と同じアイコンになる」という挙動のため気づかないことがあったため、テキストなどによるもう少し強調した表示が欲しい

フリーのアプリなのに要望して申し訳ないですが、改善していただけると嬉しいです

**Developer response:** いつもご利用いただき、ありがとうございます。
連絡先を記載していなかったのは、私のミスです。
こちらがホームページです。
https://www.kiraqtech.jp/
ご要望はこちらで検討し、可否を判断して実装予定ですので、アップデートをお待ちくださいませ。
なお、当アプリは有料アプリです。

### 5/5 — 録音中に指が触れてしまい指向性変わってしまった

*2024-06-14*

録音中に誤って指向性が変わってしまうという事がありました。
録音中は指向性が変わらないようにできるオプションがあれば完璧のアプリに個人的にはなります。

**Developer response:** おそらく入力元のことだと推察し、バージョン1.2.3で入力元を手動でロックする機能を追加しました。録音画面で右下の鍵アイコンをタップすることでロックできます。

## Frequently asked questions about Stereo Microphone

### What is Stereo Microphone used for?

Stereo Microphone allows you to use your iPhone or iPad as a live microphone with output to headphones or speakers. It can also be used to record audio instead of playing sound.

### Does Stereo Microphone have ads?

No, Stereo Microphone is ad-free, offering an uninterrupted user experience.

### What audio effects are included in Stereo Microphone?

Stereo Microphone includes four built-in effects: a pitch shifter, chorus, reverb, and a 10-band equalizer.

### What recording file formats does Stereo Microphone support?

Stereo Microphone supports various MPEG4 AAC formats up to 320kbps and PCM formats up to 32-bit float, with recording durations up to 24 hours for AAC and 6 hours for WAV.

### What is the price of Stereo Microphone?

Stereo Microphone is available for a one-time purchase of $2.99.

### What devices are compatible with Stereo Microphone's stereo input?

Stereo input is available on compatible devices, including iPhone XS or later, iPhone SE 2nd generation or later, iPad Pro 11-inch 1st generation or later, and iPad Pro 12.9-inch 3rd generation or later.

### How often is Stereo Microphone updated?

The latest version of Stereo Microphone is 1.6, and it was last updated on May 2, 2026.

### What is the age rating for Stereo Microphone?

Stereo Microphone has an age rating of 4+, making it suitable for a wide range of users.

## Version history (last 5 releases)

### 1.6 — 2026-05-02

Added a "Voice Processing" setting. If you want the behavior when selecting “Voice” mode on iOS 16.x or earlier to match that of previous versions, please enable the voice processing.
Other fixes.

### 1.5.1 — 2026-03-23

Changed the behavior when the connection changes.
The default buffer size increased.

### 1.5 — 2026-01-27

Added the VU meters.
Added the Prevent-Sleep function.
Changed the order of the file formats.

### 1.4.1 — 2025-12-09

Added an option that the app uses the internet time.

### 1.4 — 2025-12-09

Added a timecode feature. On iOS/iPad OS 16 or above, the app communicates with a NTP server.
When recording in mono, it now records with a single channel. If you want to record with two channels as before, please enable "Force 2ch Recording."

## Apps similar to Stereo Microphone

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [My Microphone: Voice Amplifier](https://appshunter.io/ios/app/my-microphone-voice-amplifier/id1350312428) | 4.2 (1,659) | Free | Utilities |
| [Microphone - record voice memo](https://appshunter.io/ios/app/microphone-record-voice-memo/id561126551) | 3.6 (119) | Free | Utilities |
| [Air Horn Loud - Clipper Sound](https://appshunter.io/ios/app/air-horn-loud-clipper-sound/id1470063753) | 4.5 (214) | Free | Utilities |
| [Voice Recorder & Notes Pro](https://appshunter.io/ios/app/voice-recorder-and-notes-pro/id492995106) | 4.6 (13,251) | Free | Utilities |
| [Microphone: stream to speakers](https://appshunter.io/ios/app/microphone-stream-to-speakers/id588225178) | 1.0 (1) | Free | Utilities |
| [Voice Record Pro](https://appshunter.io/ios/app/voice-record-pro/id546983235) | 4.7 (16,209) | Free | Utilities |

## More apps by Ryouta Kira

- [KQ MiniSynth Legacy](https://appshunter.io/ios/app/kq-minisynth-legacy/id1070850573)
- [KQ Dixie Legacy](https://appshunter.io/ios/app/kq-dixie-legacy/id1330269027)
- [MIDI Recorder with E.Piano](https://appshunter.io/ios/app/midi-recorder-with-epiano/id1448577506)
- [KQ Unotone Legacy](https://appshunter.io/ios/app/kq-unotone-legacy/id1478535391)
- [Piano Modoki](https://appshunter.io/ios/app/piano-modoki/id1509387368)
- [KQ Sampei Legacy](https://appshunter.io/ios/app/kq-sampei-legacy/id1626784865)

All apps by Ryouta Kira: https://appshunter.io/developer/862984358

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-23.*