My scenario is to help users set up a full year's alarms at once. The dates for the alarms follow a specific pattern, but not fixed weekdays, so the fixed-date type is needed.
AlarmKit - How many fixed-date alarms can I schedule in my app at most?
There is probably a limit, but doubt it will be documented.
For example, local notifications has a limit of 64.
You might just need to try scheduling a whole bunch of alarms until it throws errors.
Let us know if you find the answer!