We do not have a download file for the latest version (2.5.6), but you can try downloading it from the developer's site
Download version 2.4.3 from Mac Informer
Version: 2.4.3
Date update: Feb 3, 2022
File name: youlean-loudness-meter-2-v2.4.3-macos-2.zip
Size: 63.1 MB