It was created for folks who want total control over their tagging. The software was built specifically for Mac users and included its tagging library. MP3 (including mp2), m4a (AAC, ALAC), mp4 (AAC, ALAC, video), m4b, m4v, FLAC, AIFF (AIFC, AIF), DFF, DSF, APE, WAV, OGG (single-stream Vorbis and Opus), Monkey's Audio (ape), and WavPack (VW) files will all be tagged by it.
It comes with various features, including actions and a unique scripting system. The app supports AcousticBrainz, AcousticID, Beatport, Discogs, iTunes, MusicBrainz, and The Movie Database (TMDb).
It interfaces with Apple's iTunes, Music, and TV applications
It supports audio in aif, AIFC, AIFF, ape, DFF, DSF, FLAC, mp2, mp3, mp4, m4a, m4b, m4v, Ogg, OGA, opus, wav, and WV files
It displays stem file metadata when available.
It edits chapter information in m4b audiobooks
It supports videos in M4V and MP4
It reads all ID3 tag formats. writes ID3 v2.4 or v2.3
Optionally, write an ID3 v1 tag
Customizable FLAC mappings
The customizable APE mappings
LIST-INFO and XML support for WAV files
It supports multiple values per field type where permitted
It supports multiple fields of the same type where permitted
Almost all non-binary ID3 fields have been extended to non-ID3 file types
Support for Content Advisory, Identification, and AAC Kind fields in MPEG-4 files
Export/import a file's metadata, including artwork
Sync application preferences between two Macs (actions, templates, etc.)
One hundred fully integrated custom fields
Custom presets for UI panel layout
Ten custom edit panels. Roll your UI. Map almost any metadata item to a custom panel
Re-encode text fields that may have incorrectly been identified as ISO-Latin-1 in older mp3 files
Dark Mode
MacOS 10.10 or later
Apple Silicon or Intel Core processor