Comparison

Sound Amplifier 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

Sound Amplifier

Transform your phone into a powerful hearing aid. This app amplifies sound up to 100x, enhances voice clarity, and reduces background noise. Protect your hearing while easily listening to conversations, lectures, or TV with connected headphones.

Highlights
  • Volume amplification up to 100x
  • Voice isolation for clearer conversations
  • Hearing protection features
  • Background app operation
  • Simple one-tap amplification
  • Bluetooth headphone support
Features
Read full description

Sound Amplifier turns your phone into a hearing aid. Make your volume 100x louder and eliminate background noise while protecting your ears. Just connect your existing headphones. What you can do with Sound Amplifier • Easily listen to conversations with friends and loved ones • Use bluetooth headphones to listen to the TV and lectures • Discuss important, confidential topics with your doctor Our newest features • Amplification makes voices louder and crisper • Voice isolation eliminates background noise • Loudness protect protects your hearing Simple to Use • Connect your headphones and start amplifying with one tap • Everything is labeled and easy to read, no guessing at controls! Discrete and Practical • You can use your existing headphones to hear more clearly • Just rest your phone on the table near the person talking Some Extras • You can amplify the volume even with the app in the background • Fast and friendly support Terms of Service: https://www.mightyfine.app/sound-amplifier-terms Privacy Policy: https://www.mightyfine.app/sound-amplifier-privacy-policy

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

Sound Amplifier3 screens
Stereo Microphone4 screens

Verdict

The call

The clearest difference is review sentiment: Stereo Microphone at 85% against Sound Amplifier's 34%. Stereo Microphone also leads on in-app purchases (none vs 6). Sound Amplifier's advantage is price (Free vs $2.99) and ratings volume (1.2K vs 9). On 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

Sound Amplifier is free to download; Stereo Microphone costs $2.99 up front. Sound Amplifier sells 4 in-app purchases, starting at $9.99 per month. Stereo Microphone asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Sound Amplifier holds the better App Store score, 4.6 against 4.4. That said, the two scores are not equally well evidenced: Sound Amplifier has 1.2K ratings behind it against 9, so its average is the more settled of the two. Written reviews complicate that: 34% of Sound Amplifier's written reviews are positive against 85% of Stereo Microphone's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Sound Amplifier ships an update every 2 weeks, Stereo Microphone monthly. The most recent releases landed on October 21, 2026 and October 20, 2026 respectively.

Scorecard7 real differences · 3 level
Sound Amplifier versus Stereo Microphone: the parameters behind the verdict, then further details
ParameterSound AmplifierStereo Microphone
PriceFree — better$2.99
Rating4.6 (1.2K ratings) — better4.4 (9 ratings)
Positive reviews34.5% of reviews85.0% of reviews — better
Number of ratings1.2K — better9
Update frequencyEvery 2 weeks — betterMonthly
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS15.015.0
Further details — not scored
Size23 MB4 MB
Age rating+44+
DeveloperMighty Fine Apps LLCRyouta Kira

Customer experience

Sound Amplifier

All ratings1,238 ratings
Positive90.7%
Neutral3.6%
Negative5.7%
Written reviews87 reviews
Positive34.5%
Neutral8.0%
Negative57.5%

Stereo Microphone

All ratings9 ratings
Positive88.9%
Neutral0.0%
Negative11.1%
Written reviews20 reviews
Positive85.0%
Neutral5.0%
Negative10.0%

Bugs and requests

Sound Amplifier

Reported bugs

3 issues
  • Subscription charges even after cancellation
  • Inability to cancel free trial
  • Compatibility issues with certain devices

Requested features

3 requests
  • Free trial option without payment info
  • Ability to use without subscription
  • Integration with iOS accessibility features

Stereo Microphone

Not enough reviews yet to summarise bugs or requests.

In-app purchases

4 purchases

Sound Amplifier

Subscriptions4
  • Full Access3 variants$9.991 Month
  • Full Access3 Days trial$49.991 Year
  • Full Access3 Days trial$59.991 Year
Show 1 more
  • Full Access7 Days trial$99.991 Year
None

Stereo Microphone

No in-app purchases

Questions

Is Sound Amplifier free?
Sound Amplifier 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, Sound Amplifier or Stereo Microphone?
Sound Amplifier is rated higher. Sound Amplifier averages 4.6 out of 5 from 1.2K ratings, while Stereo Microphone averages 4.4 from 9 ratings.
Do Sound Amplifier or Stereo Microphone have ads?
Neither Sound Amplifier nor Stereo Microphone shows ads.
Which is updated more often, Sound Amplifier or Stereo Microphone?
Sound Amplifier ships an update every 2 weeks, and Stereo Microphone monthly. Most recently, Sound Amplifier was updated on October 21, 2026 and Stereo Microphone on October 20, 2026.

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