I like that you can set up multiple reminder emails to send out at different times for each appointment - this is very helpful when we have many appointments in one day! It's easy enought to use but if your looking into something with much better options maybe look elsewhere. We are using it as an internal tool so there isn't really any competition here yet (although our competitors do offer similar services). This has been great for scheduling upcoming events/appointments or simply keeping track of what needs done next week.