The ability to have my own contact list through an app that I control is great. When using other services they limit what kind/size lists are available so this was very helpful in planning out future events. It also helped me stay organized with reminders about upcoming meetings which allowed us to avoid overbooking ourselves too much as well allowing us access into contacts' calendars quickly if needed. This has been one less thing we had to worry about keeping track off when going between different locations where email isn't always accessible easily. There really wasn’t anything bad at first; however there were some glitches here & there but overall working together solved those issues quite fast actually within 24 hours most things got resolved pretty quick after initial problem arose.