I just found the 'Mark as Completed' feature in the web interface, but if possible, it would be VERY helpful to have this feature available in the iOS app. I have most of my bills set as recurring in the calendar, however they're not all autopay. It's tough to remember if I've paid something in that weird interim between payment & the draft hitting your account, which has definitely led to duplicate payments a few times :-X If it's already available, just tell me I'm dumb & where it can be found!