iVolume

iVolume analyzes each track in an Apple Music or iTunes library and applies the Replay Gain algorithm to normalize perceived loudness, so that songs play at a consistent volume without manual adjustment. It calculates ear‑perceived volume for formats such as MP3, AAC/M4A, AIFF, and Apple Lossless, and stores the results to avoid re‑analysis when settings change. The application can treat whole albums as a unit, preserving artistic intent for gapless or live recordings, and lets users define groups with separate fine‑tuned parameters.

The software runs on macOS 10.9 or later and on Windows 7 through 10, integrating with the Apple Music/iTunes app, iPhone, iPod, iPad, Apple TV, and AirPlay. It leverages multiple CPU cores for fast processing and maintains a modern, clear interface for easy operation. iVolume is positioned as a companion for users who want hands‑free, uniform playback across playlists, especially when using shuffle mode.