Its great. (As was the L. A. Noire map app.) Theres just one little thing missing... L. A. Noire helpfully displayed all the collectables/landmarks youd found on the in-game map, which made for easy, if tedious entry of things youd already found into the app. However, Arkham City REMOVES collectables from the map when you pick them up. It does, however, display them on a convenient grid. Given that this app comes almost a week after the games release, it would be very nice to be able to check off your collectables from the Riddlers grid as well as from the map. It also seems to be missing some of the other types of "collectables," namely security cameras and joker balloons which need to be destroyed to unlock most rows on the Riddler grid.