Audio
Vow Vocal Remover
Remove vocals from any song, offline, in two clicks
- Free: 3 songs a day, vocals + instrumental, the full stem player
- $9.95 once: Unlimited songs, 4 and 6 stems, lossless WAV and FLAC
Vow Volume Normalizer
Batch loudness normalizer for Windows
No more reaching for the volume. One level for every file.
Drop a folder of songs, podcasts or videos and see how loud each one really is, in LUFS, with the planned change on a meter. Listen before and after, then press Normalize: every file lands on the same loudness and a true-peak limiter makes sure nothing clips. All on your PC, nothing uploaded.
- No ads
- No malware
- No account
- Light & dark theme
- 20 files a day at -14 LUFS, unlimited analysis and ReplayGain tags
No ads. Ever.No pop-ups, no banners, no "offers".
No malware or bundlewareThe installer installs one thing: this app.
No account, no uploadIt works on your PC, and your files stay there.
Free daily limits, just $4.95 unlimitedNo subscription. No trial that runs out.
The problem
Why does every song play at a different volume?
One track whispers, the next one blasts. Fixing it usually means a tool that only knows MP3, a website that wants your library, or a meter you need a degree to read.
Whisper, then blast
Old rips, new masters, podcasts and videos all play at different levels, so your hand never leaves the volume knob.
Boosted until it crackles
Simple volume boosters raise quiet files until the peaks clip and distort.
MP3-only and out of date
Classic levelling tools handle one format, use old peak-based maths and haven't been updated in years.
Upload your whole library?
Online normalizers want every file on their servers, one at a time, often with credits to buy.
Command lines and jargon
The accurate tools run in a black window and expect you to know what LUFS, LRA and dBTP mean.
Ads and bundled extras
Free volume tools from unknown developers, wrapped in ads or installers that bring along software you didn't ask for.
Vow Volume Normalizer fixes all of it.
How it works
Add. Check. Normalize.
See exactly how loud every file is and what will change, hear it, then level the lot in one click.
- 01
Add your files
Drop files or whole folders. Every song, podcast and video is measured straight away, several at a time, with its loudness and planned change on a meter.
Drop music, podcasts or videos and level them all - 02
Check and listen
Open any file for a loudness-over-time graph, every measurement and a before/after preview made with exactly the settings the job will use.
The three steps and the benefits at a glance - 03
Normalize
Press Normalize. Each result is decoded and measured again, and the row shows its real loudness and peak, within 0.2 LU of the target.
Features
Broadcast-grade loudness, made simple
For music lovers, DJs, podcasters and video makers who want everything at one level without guesswork.
Measured like broadcasters do
ITU-R BS.1770-4 / EBU R128 integrated loudness, loudness range and true peak, checked against FFmpeg's meter to within 0.1 LU.
Never clips
A look-ahead true-peak limiter catches the peaks when quiet files are raised, so nothing distorts.
Lands on the target
Every result is decoded and measured again; if an encoder moved the level, it is corrected, within ±0.2 LU.
Hear it first
A 12-second before/after preview around the loudest part, rendered with the same gain and limiter the job will use.
Loudness over time
A graph of each file now, after and against the target, with sample peak, RMS and every other measurement.
Album mode
One gain per album, so quiet ballads stay quieter than the loud tracks, just as the artist intended.
Every format, video too
MP3, AAC, FLAC, WAV, Ogg, Opus, WMA, ALAC and more, plus MP4, MKV and MOV with the picture copied untouched.
ReplayGain tags
Write ReplayGain 2.0, Apple Sound Check and Opus R128 tags without touching the audio, free and unlimited.
Lossless MP3 and Opus gain
Change MP3 and Opus loudness without re-encoding, with an undo that MP3Gain can read too.
Targets for every platform
Streaming -14, Apple and podcasts -16, ReplayGain -18, EBU -23, ATSC -24, film -27, audiobook, peak or your own.
Light & dark theme
Easy on the eyes, day or night.
Volume Normalizer comes with a crisp light theme and a calm dark theme. Switch with one click, or let it follow your Windows setting by itself. It remembers your choice.
- LightClear and bright for daytime and busy offices
- DarkGentle on tired eyes late at night
- Follow WindowsChanges by itself when your PC does
Screenshots
See Vow Volume Normalizer in action
Real screenshots of the real app, in both of its themes: 4 light, 4 dark. Click any picture to see it full size.
Light theme
Dark theme
Who it's for
Wherever volume jumps get on your nerves
Road-trip playlists
Level a USB stick full of songs from different decades so nothing makes you jump.
DJs and party playlists
Keep every track at one loudness, with true peaks under control.
Podcasters
Hit -16 LUFS for Apple Podcasts and most hosts, episode after episode.
Video makers
Level the sound of clips for YouTube at -14 LUFS, with the picture copied untouched.
Audiobook narrators
Meet the ACX audiobook target (RMS -20, peak -3) across every chapter.
Old rips and recordings
Bring quiet cassette and vinyl transfers up to modern levels without clipping.
Compare
Vow Volume Normalizer vs the usual normalizers
What a typical volume booster, old MP3 leveller or online normalizer gives you, side by side.
| Feature | Vow Volume Normalizer | Typical normalizers & online tools |
|---|---|---|
| Price | Free every day, or $4.95 once | Subscriptions, credits or a paid pro tier |
| Your files are uploaded | Never: measured on your PC | Yes, for online normalizers |
| Loudness standard | EBU R128 / BS.1770-4 LUFS | Often peak or old ReplayGain 1 |
| True-peak limiter | Yes, look-ahead | Rarely; boosts can clip |
| Formats | Any audio, plus video | Often MP3 only |
| Before/after preview | Yes, with the job's own settings | Rarely |
| Result measured again | Every file, within ±0.2 LU | Not shown |
| Lossless MP3 gain | Yes, undoable | Only in dedicated MP3 tools |
| Ads and bundled extras | None | Common on free tools |
"Typical" describes what we found across the most-downloaded alternatives when we built Volume Normalizer. Your mileage with any one of them may vary; ours won't.
Pricing
Free every day. Just $4.95 once for the lot.
That is not a typo. Software this powerful usually means a monthly subscription; Volume Normalizer is $4.95, once, for life: it's almost a giveaway. Use it free for as long as you like, and unlock Unlimited only if you need more.
Free
$0forever
20 files a day at -14 LUFS, unlimited analysis and ReplayGain tags.
- 20 files a day (resets at midnight)
- Streaming standard: -14 LUFS, -1 dBTP
- Unlimited analysis, meters and previews
- ReplayGain and Sound Check tags, CSV report
- Every format and video, album mode, limiter
- No watermarks, no sign-up, nothing uploaded
Best valueUnlimited
$4.95USD, once. Yours for life.
Almost a giveaway. Less than a coffee for software this powerful: no subscription, no renewals, yours for life on 2 PCs.
Any number of files, every target, lossless MP3 and Opus gain.
- Any number of files, whole libraries at once
- Every target: -16, -18, -23, -24, -27 and more
- Audiobook, peak and custom targets
- Lossless MP3 and Opus gain, undoable
- One payment, yours for life on 2 PCs
- Every future update included
How unlocking works
- 1Use it free first Install Vow Volume Normalizer and use it on your own files. No card, no account, no time limit.
- 2Click "Unlimited" in the app Pay $4.95 USD once by card, securely through Stripe in your browser.
- 3It unlocks itself Within seconds, for life, on up to 2 of your PCs. Your license key is emailed to you, and every future update is included.
Payments by Stripe: we never see or store your card. Questions? Ask a real person.
Clean software
Safe to install. Nothing else comes with it.
Most "free" Windows downloads pay for themselves with ads, bundled extras or your data. Vow Volume Normalizer doesn't need to: it's paid for honestly, once, by the people who find it useful.
Download Volume Normalizer free- No ads, toolbars or "offers"The installer installs one thing: Vow Volume Normalizer. No pre-ticked boxes to watch out for.
- No administrator rights neededIt installs just for you, in your own user folder, and leaves the rest of Windows alone.
- Nothing running in the backgroundNo startup programs, no tray nags, no services. When you close it, it's closed.
- Everything includedAll it needs is inside the installer, so you never have to fetch a "required component" from somewhere else.
- Uninstalls cleanlyOne click in Windows Settings > Apps. Your own files are never touched.
- A real company behind itMade, published and supported by XTO Pty Ltd, an Australian company, with real people answering every message.
Step-by-step guide
How to normalize the volume of audio files on Windows
Make a whole folder of songs or episodes play at the same loudness in a couple of minutes.
Step 1: get it freeInstall Vow Volume Normalizer free
Download it from this page and run the installer. It needs no administrator rights and no account, and FFmpeg is included, so there is nothing else to set up.
Drop your files or folders
Drag songs, podcasts, videos or a whole music folder onto the window, or press Ctrl+O. Each file is measured at once and shows its loudness, true peak and planned change.
Pick a target
Streaming (-14 LUFS) suits Spotify, YouTube, Tidal and Amazon Music and is already selected. With Unlimited you can choose Apple and podcasts -16, ReplayGain -18, EBU -23 and more.
Listen before and after
Click any file to see its loudness graph and press Prepare before / after to hear 12 seconds around the loudest part, exactly as it will sound.
Press Normalize
Press Normalize N files or Ctrl+Enter. Results go to Documents\Vow Volume Normalizer by default, keeping your folders, and each row shows the real loudness it reached. Your originals stay as they are.
Technical details
Volume Normalizer at a glance
- Works on
- Windows 10 (1809+) and Windows 11, 64-bit
- Measures
- EBU R128 / BS.1770-4 LUFS, true peak, loudness range, RMS
- Targets
- -14 LUFS (free) · -16, -18, -23, -24, -27, ACX, peak, custom (Unlimited)
- Opens
- MP3, AAC, FLAC, WAV, AIFF, Ogg, Opus, WMA, ALAC, APE and more, plus MP4, MKV, MOV
- Saves
- Same as original, MP3, AAC, FLAC, WAV, Ogg Vorbis, Opus, ALAC
- Internet
- Not needed: works fully offline
- Install
- Per-user, no administrator rights, no account
- Languages
- English
- Theme
- Light, dark or follow Windows: one click to switch
- Version
- 1.0.0, released 7 November 2026
- Publisher
- XTO Pty Ltd (Australia)
FAQ
Questions about Volume Normalizer
Is Vow Volume Normalizer free?
Yes. You can normalize 20 files a day to the Streaming standard (-14 LUFS) for free, with unlimited analysis, previews, ReplayGain tags and CSV reports. Files already at the target cost nothing. There are no ads and no watermarks. Unlimited, a one-time $4.95 USD payment, removes the daily limit and adds every target and lossless MP3 and Opus gain.
Does it upload my music?
No. Every measurement and every change happens on your own PC. Your files never leave your computer and the app works with no internet connection.
What is LUFS, and which target should I pick?
LUFS measures loudness the way people hear it, as the streaming services and broadcasters do. Streaming -14 LUFS suits Spotify, YouTube, Tidal and Amazon Music and is the default. Apple Music and most podcast hosts use -16, ReplayGain 2.0 uses -18 and EBU R128 broadcast uses -23.
Will raising quiet files make them clip?
No. A look-ahead true-peak limiter catches the peaks before they go over the ceiling (-1 dBTP by default). If you prefer, choose Less gain to avoid limiting entirely, and a boost cap stops near-silent recordings from turning into hiss.
Does normalizing reduce the quality?
Re-encoding keeps the original codec, sample rate, bit depth and bit rate, and lossless files stay lossless. To avoid re-encoding altogether, use ReplayGain tags (free) or lossless MP3 and Opus gain (Unlimited), which change the level without touching the audio data.
Can it normalize the sound of videos?
Yes. MP4, MKV, MOV, WebM, AVI and other videos are levelled with the picture, subtitles and other audio tracks copied untouched, bit for bit.
Will my originals be changed?
Not unless you choose to. By default the results are saved to Documents\Vow Volume Normalizer, keeping your folder structure. You can also save next to the originals, or replace them, with the originals moved to the Recycle Bin.
Is it safe to install?
Yes. It is made and published by XTO Pty Ltd, an Australian company. The installer contains no ads, no toolbars and no bundled software, needs no administrator rights, and uninstalls cleanly from Windows Settings.
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Done searching. Get Volume Normalizer.
Every song, podcast and video at the same loudness, in one batch. Free to use every day, $4.95 once if you ever want Unlimited.
- No ads
- No malware
- No account
- No subscription