A new personal-safety app turns your iPhone into a "virtual witness." Can it really help keep you safe?
Each day for 10 business days, 10 CNET personalities are picking their 10 favorite iPhone apps. Today, check in with Senior Associate Editor Jason Parker, who spends all day every day reviewing Mac software for CNET Downloads. At the end of July, we'll declare the 10 most popular of the 100 according to you, our readers.