BetterAudio vs SoundSource 6: per-app volume, EQ and routing in both. BetterAudio adds on-device dictation and hearing health, with a free core.
Both give each Mac app its own volume, EQ and output. BetterAudio adds on-device Whisper dictation, hearing health and media-key routing, and its core is free. SoundSource adds third-party Audio Unit effects, timed mute and device volume lock.
Pick SoundSource 6 if: You chain third-party Audio Unit plug-ins per app, or need timed mute per app.
Pick BetterAudio if: You want per-app audio, dictation and media-key control in one free menu-bar app, on macOS 14.6 or later.