FightdayGuide
Free UFC calendar sync vs paid calendar tools (Apple, Google and Outlook)
You do not need a paid subscription to sync UFC, PFL, BKFC, RIZIN and OKTAGON schedules to Apple Calendar, Google Calendar or Outlook.
What paid calendar tools charge for
Several sports calendar services put automated ICS subscriptions behind a monthly fee or a seven-day trial, even though the underlying schedule data is public.
What you get free on Fightday
The Fightday calendar feed is free with no account and no trial. Every card is split into early prelims, prelims and main card, updates every six hours, and uses spoiler-free titles.