The short version
Stay with Fantastical if you use iCloud, Exchange or several calendar accounts, or want a calendar app on every Apple device. Pick Palby Planner if your calendar is Google's and you want your tasks, routines and habits planned onto the same hours.
Who should pick which
Stay with Fantastical if
- Your calendars are iCloud, Exchange, Microsoft 365 or CalDAV
- You want a calendar app on Mac, iPhone, iPad, watch and Vision Pro
- You want to start at no cost: its basic version is always free
Pick Palby Planner if
- Your calendar is Google Calendar
- You want the to-do list to be the main thing, with events beside it
- You want habits, routines and notes in the same place