Q: Which of these apps do you own?

A: SmartPad only, and I wish to change to sync from iPhone Calendar to mySmartDay.com.

Easy! To set up sync for the first time, just go to Settings and verify your free mySmartDay account.  If you do not already have an account, you can create one from Settings -> Synchronization.  You can now sync directly with mySmartDay.com, our Cloud Hub and free browser-based organizer.   Bookmark the link!