Hi Product Hunt! I’m Philippe, the creator and maintainer of LUFScale.
LUFScale is a free, open-source desktop app for macOS and Windows that analyzes perceived loudness and normalizes audio to a chosen LUFS target with True Peak control. It supports MP3, FLAC, WAV, AIFF, M4A, OGG and Opus, offers before-and-after comparison, ReplayGain metadata and CSV reports, and never modifies or moves the original files.
