# MP3Gain vs ENVO

The clearest difference is in-app purchases: ENVO at none against MP3Gain's 6. MP3Gain's advantage is device support (3 vs 1). On price, ads and iOS requirement there is nothing between them.

Both are free to download. MP3Gain sells 6 in-app purchases, starting at $1.99 per month. ENVO asks for nothing beyond the download.

## The numbers

| Metric | MP3Gain | ENVO |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 13.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Weekly | — |
| Monetization | Free with in-app purchases | — |
| Size | 18 MB | 1 MB |
| Requires iOS | 16.6 | **16.0** |
| Devices | **iPhone, iPad, Mac** | iPhone |
| Age rating | +4 | 4+ |
| Developer | [SEASOFT LTD.](https://appshunter.io/developer/456906339) | [Kilian Fix](https://appshunter.io/developer/6774581019) |

## What reviewers say

### MP3Gain

[App page](https://appshunter.io/ios/app/mp3gain-audio-normalization/id697885500)

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.

**Highlights:** 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

**Features:** Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MP3Gain Premium Monthly Plan | $1.99 | per month |
| MP3Gain Pro(Yearly) | $9.99 | per year |
| WMA Gain | $6.99 | one-time |
| MP3, M4A Gain | $6.99 | one-time |
| Gain all audio format | $9.99 | one-time |
| MP3Gain Pro (Lifetime) | $19.99 | one-time |


### ENVO

[App page](https://appshunter.io/ios/app/envo-adaptive-volume/id6789852131)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is MP3Gain free?

MP3Gain is free to download, with in-app purchases available.

### Is ENVO free?

ENVO is free to download, with no in-app purchases.

### Do MP3Gain or ENVO have ads?

Neither MP3Gain nor ENVO shows ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*