ContributorNetwork - You may use an app on your home PC or Mac, like Tomboy or Notational Velocity, to take text notes or virtual "scrapbooks" of pictures. But you might not have known that many notetaking programs have companion apps for your Android smartphone, that let you view and even create and edit new notes on the go. Some of these even let you add pictures you take on your phone to your scrapbooks, or check off items on your shopping list (for instance).