I use cozi on my KF, Blackberry, and computer. They all sync together immediately when a change is made. I sync my college calendar and my daughters school calender into it as well. My wife uses it on her phone and computer also so we both know each others schedules. She works first shift and i work second plus going to college so its been perfect for us. It has calendar, to do lists, and shopping lists. I used to forget to tell her to pick something up at the store when she went shopping. Now i just put it on cozi when i think of it and she sees it on her phone when she goes. There is a free with ads version and a paid with no ads version. You can download it on amazon for the KF and at their website for your phone and computer.
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Samsung Galaxy Note 5.3 i717
Samsung Galaxy Note 10.1 GT-N8010