Placemark makes Facebook places more fun and useful by letting you visualize them, aggregating check-ins and letting you search Facebook places from your iPhone – something Facebook's Graph Search can't do yet! Filter by friend, view as a map, thumb through a list... However you choose to do it or wherever in the world you are, you can easily see where your friends hang out.

With Placemark, you can also mark places and set reminders for places that interest you so you will be alerted whenever you're nearby! And if your friends use Placemark, you can see each other's marks so you can easily see which places you want to check out together. Cool, huh?

Because Placemark works exclusively with Facebook, you will need a Facebook account to use it. You will not have to create a new account, search for friends, or any of the other steps most apps put you through. Just sign in and get going!

Please note: Reminders sometimes use GPS positioning int he background, which may decrease battery life.