Audio Normalizer - Mp3 Gain 4+

Music & Songs Volume Equalizer


    • 3.6 • 99 Ratings
    • $19.99



Audio Normalizer provides a batch normalizing feature that helps users to balance all the music and audio files to equal volume in the most popular audio formats like MP3, M4A, WAV, AAC, FLAC, WMA, AIFF, AMR, AC3, MP2, OGG, M4R, AU etc with high accuracy and at maximum speed with a single click.

Is it annoying to adjust the volume of each file individually? Download Audio Normalizer for Mac now.

Audio Normalizer Features:
1 Equalize multi-audio files to the same volume with a single click.
2 Leveling the volume of MP3, M4A, WAV files directly losslessly.
3 Supports many popular audio formats: MP3, M4A, WAV, AAC, FLAC, WMA, AIFF, AMR, AC3, MP2, OGG, M4R, AU files.
4 Supports batch processing.
5 You can custom volume level.
6 Awesome Usability: Easy to use through a modern and clear user interface.

Please note that volume of DRM-protected files can not be analyzed and adjusted.

Audio Normalizer Feedback:
Any suggestion will be appreciated, email us at:

What’s New

Version 1.2.0

1. Runs natively on Apple Silicon M1, M2 chip.
2. Bugs were fixed.

Ratings and Reviews

3.6 out of 5
99 Ratings

99 Ratings

Miss Lan ,

Best Alternative to MP3 Gain on a Mac

The previous reviewer gave this app one star for crashing. Well, it will crash if you try to load a big folder. A minor hassle, but if you keep it to doing 50 tracks or less at a time, you should be fine. If you do that, you will find this program works very well as I have. Actually, this is the best I have found to MP3 Gain that I loved when I had a Windows machine. To make sure it was adjusting as it said it was, I toook the adjusted tracks from this program and put it on a flash drive. I then put the flash on my old Windows machine and loaded them in MP3 Gain and they were read at the right dB volume and that program did not need any adjustment.

The only two things making this not a 5 star in my opinion are: 1) Would like to see it be able to process more than 50 files loaded without locking up 2) Having a choice of having the adjusted file save to the folder it came from instaed of selecting a specific folder

Regardless, this is the best Normalizer in the app store and I have tried them all...

Captn James ,

Good But….

Recently purchased the app to average out about 500 songs to similar volumes, the app is very simple to use and does work very well… if it doesn’t crash. I’ve tried different ideas of drag and drop 100 songs. About half way through, it abruptly closes. I tried dropping 50 songs, 30 songs, down to 5. It will work on 5 at a time for a while, then just crash. I’ve tried drag and drop, cut and paste, adjusting the DB number etc. I like the app and when it works it’s very simple and good so I’m going to keep trying. One song at a time for 550 songs for a IPOD is gonna take a very long time. I’m using MacBook pro by the way. Maybe I should try it via Windows?

oregonpete ,

Easy to use, results are excellent, no crashes

The Audio Normalizer app does a great job of batch processing songs to equalize volume. The results are excellent, even on a mix of very different types of music with very different volume profiles, e.g. classical, folk, pop, ethnic, rock. I did not experience any crashes processing folders of music as large as 200 items.

I used it to normalize volume on music to be put on mp3 CDs and an mp3 SD Card for use in our vehicles, and it was perfect for this purpose. It is true, as one reviewer complained, that it would be very difficult to use it to normalize your entire iTunes library, but you don’t need to do that. I have found that setting iTunes/Preferences/Playback/SoundCheck accomplishes audio normalization quite well. There are similar SoundCheck settings on the iPhone, iPad and iPod.

App Privacy

The developer, effectmatrix, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary, for example, based on the features you use or your age. Learn More


  • Family Sharing

    Up to six family members can use this app with Family Sharing enabled.

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