I love the idea but there are syncing issues.  Events take forever to show on the graph regardless of whether i entered them in the sectograph app or my google calendar.  They show up in my google calender almost automatically regardless of the same.  Also i think 12 hour clock makes it tricky to read since the switch from am to pm is in the middle of the day.  I have something starting at 12:30 and i cant see it on the sectograph but there is a little arrow at that start time with the first letter of that event and nothing else.  It's confusing.