MP3Gain - Audio Normalization

MP3Gain - Audio Normalization

Sound Booster & Higher Volume

0 ratings
17 reviews
Free
In-App Purchases

Details

  • Released
  • Updated
  • September 7, 2013
  • September 4, 2026

Features

MP3Gain - Audio Normalization screenshot #1 for iPhone
MP3Gain - Audio Normalization screenshot #2 for iPhone
MP3Gain - Audio Normalization screenshot #3 for iPhone
MP3Gain - Audio Normalization screenshot #4 for iPhone
MP3Gain - Audio Normalization screenshot #5 for iPhone
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About

This app normalizes the volume of your audio files, ensuring consistent loudness across songs, podcasts, and uploads. It offers multiple analysis modes and presets for easy use, with batch processing for multiple files. Listen to comparisons before exporting to maintain audio quality and metadata.

✓Volume normalization
✓Multiple analysis modes (Peak, RMS, EBU R128)
✓Built-in and custom presets
✓Batch processing
✓Listen before export
✓Preserves metadata and album art
✓Supports MP3, FLAC, M4A, WAV, AIFF, OGG
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What's New in MP3Gain

2.0.0

September 4, 2026

6

Subscriptions & In-App Purchases

MP3Gain Premium Monthly Plan

Enjoy all the features of MP3Gain, without ads.

$1.991 Month
How to cancel MP3Gain subscription ⁉️

User reviews

It lowered hundreds of songs!!

What the heck! It lowered all my music! HELP!

Hype

Yet another program that doesn’t do what it promises. All I want to do is reduce the volume on an mp3 file, but not with this APP.

Poor user interface and no error reporting

I expected this to be similar to MP3Gain for Windows but the user interface is very sparse. The settings menu option is greyed out so I cannot change anything. Multiple files were not adjusted and showed an "!" instead of a green check, but there is no way to find out what the error was. Some of the files were recently purchased music & some were ripped from CDs. I emailed Seasoft tech support one of the files & they said there is nothing wrong with it. I haven't heard anything from them for several days. MP3Gain for Windows adjusted the same files with no errors. In its present state this app isn't worth buying.
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Works, with bugs

App could not batch process more than 8-tracks at a time without crashing. Also, bitrate is different in resulting file, so resulting files are about twice the size as the orginals.

Doesnt work

continuously crashes "MP3 Gain - Audio Normalization quit unexpectedly.” Trying to adjust gain on 89 files Would like my money back

Developer apps

FAQ

What is MP3Gain used for?

MP3Gain is used to normalize the volume of audio files, making them all play at a consistent loudness. This is useful for music playlists, podcast episodes, or any audio content where volume levels vary.

Does MP3Gain have ads?

MP3Gain does not contain advertisements. The app offers a free tier with limitations and an optional Pro upgrade for unlimited processing.

What audio formats does MP3Gain support?

MP3Gain supports a wide range of audio formats including MP3, FLAC, M4A, WAV, AIFF, and OGG. This allows for normalization of most common audio file types.

How does MP3Gain compare to other audio normalizers?

MP3Gain offers multiple normalization modes like Peak, RMS, and the industry-standard EBU R128 (LUFS). It also provides batch processing and the ability to preview changes before exporting, which are key features for efficient audio management.

What are the pricing options for MP3Gain Pro?

MP3Gain Pro offers two upgrade options: a yearly subscription for $49.99/year with a 7-day free trial, or a lifetime purchase for $99.99. These unlock unlimited file processing.

Can I cancel my MP3Gain Pro subscription?

Yes, subscriptions can be managed or cancelled at any time through your Apple ID settings. Auto-renewal can be turned off at least 24 hours before the end of the current billing period.

Is MP3Gain suitable for professional use?

Yes, MP3Gain is powerful enough for creators, offering the EBU R128 (LUFS) standard used by streaming and broadcast platforms. Its precision and batch processing capabilities make it suitable for professional audio workflows.

What is the age rating for MP3Gain?

MP3Gain has an age rating of 4+. This indicates it is suitable for a wide audience, including children, with no mature content.