I like how easy it was when we used this app with our previous employer, but even if you don't use them at work they have an amazing free version! It's great because as soon there are updates or changes made in your account (which can be very often) all of those people who were using their service will get notified about these new features right away without having any problems reaching one another via phone calls/email etc., since everyone uses different devices so its not always possible just by calling someone up from where ever u r currently located - unless thats ur only option anyway :) They also offer many useful tools such us task lists & Gantt charts among others things too!