Youlean Loudness Meter

Youlean Loudness Meter is your ultimate free VST, VST3, AU and AAX plugin for loudness measurement.


  • International standards compliance.
  • Resizable interface.
  • Histogram and distribution display.
  • Multi channel support.
  • Smart Loudness Memory.

International standards compliance

  • ITU-R BS.1770-4
  • EBU R128
  • EBU R128 S1
  • ATSC A/85
  • OP-59
  • ARIB TR-B32
  • AGCOM 219/09/CSP

Channel support

  • Mono
  • Stereo
  • 5.1 DTS
  • 5.1 ITU
  • 5.1 Film

Smart Loudness Memory

Smart Loudness Memory will speed up your workflow by saving all data with DAW session and recalling it after you reload the session.


V1.9.7 – BETA – May 7, 2018 

  • Fixed hold max values not resetting after a mouse click
  • Added AAX plugin type for macOS and Windows
  • Stability improvements

V1.9.6 – BETA – May 2, 2018 

  • Fixed VST3 not working in Studio One
  • Fixed VST3 not working in vMix
  • Fixed bug when moving color splits will freeze vMix

V1.9.5 – BETA – May 2, 2018

  • PRO – Added settings for PLR graph, alerts, optimizations
  • PRO – Added pdf export option
  • Fixed PLR-I measurement error after project reload
  • Optimized binary size
  • Reduced CPU usage by ~30%
  • Minor GUI tweaks

v1.9.4 – BETA – Apr 1, 2018

  • Fixed forced mono audio
  • Fixed some crashes

v1.9.3 – BETA – Apr 1, 2018

  •  Fixed broken v1.9.2 build that will crash sometimes

v1.9.2 – BETA – Mar 31, 2018

  • PRO – Added loudness target knob
  • Added check if a plug-in interface can fit the monitor screen
  • Added buttons to reset window size and scaling
  • Added loudness range display
  • Fixed crash when switching to 22050 Hz sample rate
  • Minor GUI bug fixes

v1.9.1 – BETA – Feb 28, 2018

  • Fixed Time Code behavior when “Auto Reset” feature is turned on
  • Minor small bug fixes

v1.9.0 – BETA – Feb 7, 2018

  • Added smooth color transition option
  • Added PLR-Short Term and PLR-Integrated readouts
  • Added second color split
  • Added true peak graph display
  • Added Getting Started window
  • Added true peak graph display
  • Extended range of true peak threshold to -30 dB
  • Optimized graphics for macOS retina and Windows HiDPI mode
  • Optimized graphics performance
  • Fixed preset recalling
  • Fixed most of the resizing problems on macOS
  • Better compatibility with macOS High Sierra using AU format
  • GUI design improvements
  • Stability improvements

v1.5.0 – BETA – Jun 4, 2017

  • Added GUI scaling. Activate by ctrl+drag on resizing handle
  • Added view modes
  • Added continuous mode
  • Added fine control for true peak threshold
  • Fixed crashes in Cubase – VST3 version
  • A lot of stability improvements
  • Minor graphical glitches fixes

v1.0.5 – Jan 12, 2017

  • Added macOS installer
  • Fixed settings not sticking after project reload
  • Fixed jump when changing window size with the mouse wheel
  • Improved scrolling with histogram control
  • macOS stability improvements
  • Minor graphical glitches fix

v1.0.4 – Dec 12, 2016

  • Added manual.
  • Fixed small bug when switching from auto to non-auto in Time Code mode
  • Fixed wrong integrated and loudness range measurements if play position has jumped in the playlist

v1.0.3 – Dec 8, 2016

  • Fixed random resetting transport in Bitwig Studio
  • Many fixes regarding transport

v1.0.2 – Dec 6, 2016

  • Fixed AU crash at load in Ableton Live
  • Fixed true peak detection
  • Fixed a button that pauses integrated and loudness range measurements

v1.0.1 – Dec 4, 2016 

  • Fixed missing libraries on macOS
  • Fixed volume boost in FL Studio
  • Fixed FL Studio crash while detaching the plugin
  • Fixed Reaper crash after play in Windows
  • Fixed minor graphical glitches

v1.0.0 – Nov 30, 2016

  • Initial release
Technical Details


  • Minimum OS version – Windows 7
  • Plugin formats – VST2, VST3


  • Minimum OS version – macOS 10.7
  • Plugin formats – VST2, VST3, AU

V2 version is around the corner!

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  • Latest BETA versions should be more stable than V1.0.5.
  • v1.9.7 will expire on July 1, 2018. Then, you will need to update plug-in with a newer BETA version.
  • PRO version will be available with the v2.0.0 release.
  • AAX is available only in latest BETA version.

Customer Reviews

Write a Review


The best!

5 5 1
Just a top-notch plug-in for mastering, and it's friggin' FREE! What do you want more?

great plugin !

5 5 1
I use Youlean meter plugin for monitoring my streaming for see if the ebur128 rule is respected .It's very good plugin and very stable with last beta.

A fantastic plugin

5 5 1
I was on the hunt for a plugin that showed me different measurements for mixing tracks for TV, Radio production. I found Youlean and never had to go any further. I work in Ableton Live and I have never had a single problem with this plugin. The options to change measurement types is amazing and the flexibility of the loudness meter is just second to non!

Mixing & mastering engineer

5 5 1
Works great on PC & Mac, tried it on Cubase, Logic Pro X and Pro-Tools. The PDF option it cool and all the different loudness options are well presented. If there is a specific thing that you would like me to test, please send me an email. If i'll come across any problem, i will send you another review. Cheers!

Audio Director/Engineer

5 5 1
Thanks for a great free tool. I just ran it alongside another well-known meter to get some 'insight' 😉 on how it tracked on a tv recording session. It measured very well for OP59. Was tracking integrated loudness exactly in time with the other meter. Well done.

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