Set prayer reminders
Choose the hours you pray and their times. Each calendar event names the office and feast of the day. Your schedule lives entirely in the private calendar link below; nothing is stored on this site.
Setting it up
iPhone, iPad, Mac (Apple Calendar)
Tap Subscribe in calendar app above and confirm. Reminders work as configured. If alerts don't appear, check that Remove Alerts is off for the subscription (Settings › Calendar › Accounts).
Google Calendar
Copy the calendar link, then in Google Calendar choose Other calendars › + › From URL and paste it. Google ignores the alerts inside subscribed feeds — after subscribing, open the calendar's settings and add a default Event notification (e.g. 10 minutes) so reminders fire. Google may take up to a day to first sync the feed.
Android without Google Calendar
Install ICSx⁵ (free, F-Droid or Play Store), add the feed URL, and its alerts work as configured.