Tempting by the web, I tried and bought the paid calendar backpack. But After a while, I still don't have anything to put on the calendar. Then I quit, and stop the paid program. After that I tried google calendar and fell in love with it. Tried for weeks and now using it for my weekly/monthly planning. Here are my summary for backpack - It's very very basic. - The week starts on sunday, which is weird. - Patrick, try google calendar once, and you'll regret you paid $5 for backpack calendar.