Yes, PokerTracker 4 is available for both macOS and Windows operating systems.   The features available are the same in the macOS version with some small exceptions. Each feature listed below is not available in the Mac version of PokerTracker due to the OS X operating system's security policies. 

1. The HUD cannot be displayed at Full Tilt Poker Rush tables *
2. The HUD cannot be displayed at Party Poker Fast Forward tables *
3. Tables cannot be automatically opened in TableTracker

* The HUD can only be placed at the table when PokerTracker 4 has knowledge of each player seated at the table, at normal tables we gain this information from the completion of the prior hand but this is not possible for some Fast Fold games such as Rush because the players change after the end of each hand.  PokerTracker 4 for Windows is able to address this problem by gaining player names through the help of the Windows operating system, but there is no equivalent method on the macOS operating system due to differences in security policies.   PokerTracker 4 can support PokerStars Zoom and OnGame's STROBE Fast Fold game format because both PokerStars and OnGame provide the opponent names and seating positioning along with the hand history file, this is necessary for us to support Rush or Fast Forward tables in macOS.   Mac users are advised to play at PokerStars Zoom or OnGame's STROBE tables if they wish to play at Fast Fold tables with PokerTracker 4.