Stereo Microphone vs AtomTalk
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Stereo Microphone
Transform your device into a powerful microphone or audio recorder. Enhance your sound with built-in effects like pitch shifting and equalization, and choose from various high-quality recording formats.
- Device as microphone
- Audio recording
- Pitch shifter effect
- 10-band equalizer
- Multiple recording formats
- Noise reduction
- System voice processing
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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.
AtomTalk
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本アプリは、iPhone専用アプリです。 iPhoneとM5Stackの超小型マイクスピーカーユニット AtomEcho 間で音声通話ができます。 ・使い方 AtomEchoと通信ができるとマイクマークが青色になります。 マイクマークを押すと赤色になり、話した音声をAtomEchoに送信します。 AtomEchoでは、受信した音声をスピーカーから再生します。 AtomEcho側でボタンを押して話すと音声が送信されて、このアプリで受信されます。 音声を受信すると、スピーカーマークが緑色になり音声が再生されます。 AtomEchoとiPhoneは、同じネットワークに接続されている必要があります。 AtomEcho側のプログラムは、GitHubから入手出来ます。 https://github.com/ayamasan/AtomTalk
Screenshots
Verdict
The clearest difference is price: AtomTalk at Free against Stereo Microphone's $2.99. Stereo Microphone's advantage is update cadence (every 6 weeks vs every 27 months) and device support (3 vs 1). On ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
AtomTalk is free to download; Stereo Microphone costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Stereo Microphone ships an update every 6 weeks, AtomTalk every 27 months. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.
| Parameter | Stereo Microphone | AtomTalk |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 4.4 (9 ratings) — better | — |
| Positive reviews | 85.0% of reviews | — |
| Number of ratings | 9 — better | — |
| Update frequency | Every 6 weeks — better | Every 27 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 3 MB | 0 MB |
| Age rating | 4+ | 4+ |
| Developer | Ryouta Kira | Atsushi Yamada |
In-app purchases
Stereo Microphone
No in-app purchases
AtomTalk
No in-app purchases









