MP3Gain - Audio Normalization
Sound Booster & Higher Volume
Free · In-App Purchases
Make every song, podcast, and mix the same volume. Normalize audio to broadcast standards with MP3Gain.
Make all your audio the same volume — without touching the volume dial.
Ever jump from one song to the next and grab for the volume button? Or finish a podcast that's twice as loud as the one before? MP3Gain fixes that. It measures the true loudness of your audio and applies exactly the right amount of gain, so everything you listen to, share, or upload sounds even and professional.
Quick for everyday fixes. Precise for creators.
Three measurement modes cover every job:
• Peak — match tracks to a target peak level (in dB).
• RMS — match the average energy of your tracks for consistent perceived volume.
• EBU R128 (LUFS) — the international loudness standard used by streaming and broadcast platforms, with true-peak limiting.
Built-in presets
Start in one tap with presets tuned to real-world targets, and save your own for repeat jobs.
• Music — RMS -20 dB
• Podcast — EBU R128 -16 LUFS
• Voice — EBU R128 -18 LUFS
• Streaming Video — EBU R128 -14 LUFS
• Default — EBU R128 -23 LUFS
Batch processing
Import a whole album, playlist, or batch of files and normalize them all at once. Adjust one file and apply the same settings to every file in your list. Progress is shown per file, and you can cancel anytime.
Hear it before you export
Play the original and the processed version side by side in the app, so you know it sounds right before you save or share it.
Keep your music intact
MP3Gain preserves embedded album art and metadata. Lossy formats keep their original bitrate; lossless files are processed without additional lossy compression.
Import from anywhere
• Select files from the Files app
• Pull tracks straight from your Music Library
• Open an audio file in MP3Gain from any app
Note: DRM-protected tracks — for example, Apple Music subscription titles — can't be imported or processed.
Supported formats
MP3, FLAC, M4A, WAV, AIFF, and OGG.
MP3Gain Pro
The free plan processes up to 3 files per day — perfect for quick fixes. Upgrade to MP3Gain Pro for unlimited processing:
• Yearly — $9.99/year
• Lifetime — pay once at $19.99 and unlock forever
Subscriptions renew automatically and can be managed or cancelled anytime in your Apple ID settings. Payment is charged to your Apple ID account at confirmation of purchase. The subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. Your account is charged for renewal within 24 hours prior to the end of the current period. You can manage or turn off auto-renewal at any time in your Apple ID account settings.
Privacy Policy: https://getseasoft.com/legal/privacy-policy
Terms of Use: https://getseasoft.com/legal/terms-of-service
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Better presets
• Added Voice and Streaming Video presets for spoken word and video soundtracks.
• Refreshed preset values so your tracks land at the loudness streaming services expect.
• Your existing presets are kept and brought over automatically.
Smoother everyday use
• Each loudness mode remembers its own target level — switching modes no longer overwrites your settings.
• Faster analysis, so you get results sooner.
• Clearer messages when a file is damaged or can't be read.
Plus general stability improvements and bug fixes.
The developer, SEASOFT LTD., 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.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Size
- 18.4 MB
- Category
- Music
- Compatibility
Requires iOS 16.6 or later.
- iPhone
Requires iOS 16.6 or later. - iPad
Requires iPadOS 16.6 or later. - Mac
Requires macOS 13.0 or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- MP3Gain Pro(Yearly) 89,00 kr
- Gain all audio format 89,00 kr
- MP3, M4A Gain 59,00 kr
- MP3Gain Premium Monthly Plan 19,00 kr
- MP3Gain Pro (Lifetime) 179,00 kr
- WMA Gain 59,00 kr
- Provider
SEASOFT LTD.
- SEASOFT LTD. has identified itself as a trader for this app and confirmed that this product or service complies with European Union law.
- DUNS Number
687115560 - Address
Hong Kong
999077 Kwun Tong
Rm 06 11/F LEMMI CTR
50 HOI YUEN RD - Phone Number
+852 62680734 - Email
admin@imacbits.com
- Copyright
- Copyright © 2026 SEASOFT LTD. All Rights Reserved.