GarageBand’s most recent update for macOS adds a few neat new Mac-only features, but perhaps its biggest addition is for iPad users. Now the Mac version of GarageBand can sync a cut-down version of any song with the iPad or iPhone, allowing you to add new tracks, then sync them back with the master project back on your Mac. It’s a feature that only came to Logic in January of this year.
This is big, because it lets musicians use the full power of the Mac GarageBand in their studio or bedroom, and still add tracks to that project from a phone. You could, for instance, take a mix with you to band practice, lay down some new tracks on your iPhone, then sync them back.