A very good Pie chart graphical view of your schedule with nice colours and everything is good about the app specially the graphical side. I'm not a pro owner but also rating 4 stars because of the glitch in app today. My whole sector were invisible today and it just showed blue colour filled circle with only an area of 45° looking as faded blue. And nothing else was there. I also have screen shot of the error if developers need it. Else it's a great app. Soon will buy the pro version.