I like that it's very user friendly! It was really simple getting started up quickly as well - we were able get our first app live in less than 24 hours after signing-up!! The analytics are great too but they could be more robust so there aren't many things i dislike about this program overall -- just some of their reporting features need work/improvement before launch though :) We've been using them since mid last year now when launching new programs at my job which has helped us track customer engagement throughout all channels from email campaigns right down into point of sale or mobile purchases etc..