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Youlean Loudness Meter vs x42 plugins: catalog facts
Youlean Loudness Meter	x42 plugins
Freemium Free version available, with a paid Pro version.	Free Described as an open-source plugin collection; check the site for packaged builds.
Windows, macOS	Linux
Measures LUFS, LKFS, LRA and PLR Works as a standalone app and as a plugin in most DAWs	Standards-based level meters (IEC, EBU) Zero-latency equalizer with spectrum analyzer
Some features need the paid Pro version No Linux version	Requires an LV2 host or a JACK setup Site gives little release or platform detail
Downloadable app	Downloadable app
Closed source	Open source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.