Right now I just set a calendar event (in Google Calendar) for the future. What's the repeating part? Typically I don't have to re-cancel my eg Netflix subscription once I've canceled it until I sign up again, at which point I set a reminder then.

What I'm really missing is the quick add by string that Google calendar used to have. Eg type in "next thursday at 8pm" and it would do just that, instead of laboriously having to scroll to next Thursday, then create an event and set it to start at 8pm.