if you own a business, you probably juggle dozens of tasks each day just to keep it running. with so many responsibilities, a pen-and-paper to-do list just won't cut it. that's where you iphone come in:with the right apps and a little know-how, there are countless ways to plan your day, week,month and year. and if you just need to remember to make an important business call one hour from now, there's an app for that,too.