Comparison

The Audio Converter vs Stereo Microphone

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

The Audio Converter

Easily convert audio and video files to various audio formats like MP3, WAV, and AAC. Supports dozens of input formats and offers quick, battery-friendly cloud conversions, with an increasing number of local conversion options.

Highlights
  • Convert to MP3, WAV, M4A, AAC, FLAC, OGG, WMA, AIFF
  • Supports dozens of input formats
  • Fast cloud and local conversions
  • In-app file browser
  • Share files via AirDrop
  • Secure cloud conversion process
Features
Read full description

Quickly convert your audio or video files to nearly any audio format! 1. Select your input file 2. Choose your output format ( MP3, WAV, M4A, AAC etc. ) 3. Convert! It will only take a few seconds. 4. Save your file, or open it in your favorite app! Here are the video and audio output formats you can choose from: MP3, M4A, AAC, FLAC, OGG, WAV, WMA, AIFF You can convert from dozens of input formats, here are some of the most popular formats we support converting from: MOV, M4A, MP3, WMA, MP4, WAV, OGG, OPUS, AMR, AAC, WEBM, MID and many more! Save, Share or Listen to your converted audio files in your favorite apps immediately. You can even browse your previously converted files with our in-app file browser. After conversion, you can immediately AirDrop your files right to your Mac or another device. Conversions usually take less than 15 seconds! Conversion is done on a secure cloud server, which makes conversion easier, faster and much more battery-friendly. You must have an internet connection to use this app. Files are immediately deleted from the server after conversion. While the files are immediately deleted after conversion or cancellation, you should be aware that by using this app, you agree that your files will be sent over to internet from the app to the conversion server. We've also recently added support for local conversions for many popular conversion types. These conversions don't require a server, and are usually done almost instantly! We are continuing to add support for more local conversions with each update. This app includes an optional auto-renewable subscription (Premium Pass): Premium Pass beings with a free trial period, then an auto-renewable monthly subscription when trial ends. Payment will be charged to your Apple account at confirmation of purchase and will automatically renew (at the duration/price selected) unless auto-renew is turned off at least 24 hrs before the end of the current period. Account will be charged for renewal within 24-hours prior to the end of the current period. Current subscription may not be cancelled during the active subscription period; however, you can manage your subscription and/or turn off auto-renewal by visiting your Apple Account Settings after purchase. Any unused portion of the free initial period will be forfeited when you purchase a subscription. Privacy Policy: https://float.support/the-audio-converter/privacy Terms of Use: https://float.support/the-audio-converter/terms

About

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.

Highlights
  • Device as microphone
  • Audio recording
  • Pitch shifter effect
  • 10-band equalizer
  • Multiple recording formats
  • Noise reduction
  • System voice processing
Features
Read full description

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.

Screenshots

The Audio Converter4 screens
Stereo Microphone4 screens

Verdict

The call

The Audio Converter and Stereo Microphone both sit at 4.6 stars, but that hides the real split: 85% of Stereo Microphone's written reviews are positive against 35% of The Audio Converter's. Stereo Microphone also leads on in-app purchases (none vs 6) and update cadence (every 6 weeks vs every 3 months). The Audio Converter's advantage is price (Free vs $2.99) and ratings volume (14K vs 10). On rating, ads, device support and iOS requirement 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

CostPrice · In-app purchases · Ads · Monetization

The Audio Converter is free to download; Stereo Microphone costs $2.99 up front. The Audio Converter sells 6 in-app purchases, starting at $3.99 per month. Stereo Microphone asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.6 for The Audio Converter against 4.5 for Stereo Microphone. That said, the two scores are not equally well evidenced: The Audio Converter has 14K ratings behind it against 10, so its average is the more settled of the two. Written reviews are what separate them: 35% of The Audio Converter's written reviews are positive against 85% of Stereo Microphone's.

UpkeepUpdate frequency

The Audio Converter ships an update every 3 months, Stereo Microphone every 6 weeks. Both last shipped on November 7, 2026.

Scorecard6 real differences · 4 level
The Audio Converter versus Stereo Microphone: the parameters behind the verdict, then further details
ParameterThe Audio ConverterStereo Microphone
PriceFree — better$2.99
Rating4.6 (14K ratings) — better4.5 (10 ratings)
Positive reviews34.9% of reviews85.0% of reviews — better
Number of ratings14K — better10
Update frequencyEvery 3 monthsEvery 6 weeks — better
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.615.0 — better
Further details — not scored
Size46 MB3 MB
Age rating4+4+
DeveloperFloat Tech, LLCRyouta Kira

Customer experience

The Audio Converter

All ratings13,705 ratings
Positive89.6%
Neutral2.1%
Negative8.3%
Written reviews387 reviews
Positive34.9%
Neutral5.9%
Negative59.2%

Stereo Microphone

All ratings10 ratings
Positive90.0%
Neutral0.0%
Negative10.0%
Written reviews20 reviews
Positive85.0%
Neutral5.0%
Negative10.0%

Bugs and requests

The Audio Converter

Reported bugs

3 issues
  • Conversion errors
  • Inconsistent behavior with file sizes
  • Login/subscription issues

Requested features

4 requests
  • Bulk file conversion
  • Local file conversion (no uploads)
  • More audio format support (e.g. OPUS)
  • Volume/quality control for converted files

Stereo Microphone

Not enough reviews yet to summarise bugs or requests.

In-app purchases

6 purchases

The Audio Converter

Subscriptions3
  • Premium Pass7 Days trial$3.991 Month
  • Premium Pass3 Days trial$3.991 Month
  • Premium Pass3 Days trial$9.991 Year
One-time3
  • Lifetime Pass$12.99
  • Lifetime Pass$29.99
  • Lifetime Pass Promo$29.99
None

Stereo Microphone

No in-app purchases

Questions

Is The Audio Converter free?
The Audio Converter is free to download, with in-app purchases available.
Is Stereo Microphone free?
Stereo Microphone costs $2.99, with no in-app purchases.
Which has better reviews, The Audio Converter or Stereo Microphone?
The Audio Converter is rated higher. The Audio Converter averages 4.6 out of 5 from 14K ratings, while Stereo Microphone averages 4.5 from 10 ratings.
Do The Audio Converter or Stereo Microphone have ads?
Neither The Audio Converter nor Stereo Microphone shows ads.
Which is updated more often, The Audio Converter or Stereo Microphone?
The Audio Converter ships an update every 3 months, and Stereo Microphone every 6 weeks. Most recently, The Audio Converter was updated on November 7, 2026 and Stereo Microphone on November 7, 2026.

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