Developed by Dorling Kindersley Ltd, the (unofficial) map app contains the location of every Riddler trophy for Batman and Catwoman, riddle solutions, plus scrollable, zoomable maps for every area of the game.
Priced at £1.99, the app also contains a tracking feature, enabling players to toggle on and off the icons for collectibles that have been found and are awaiting discovery.
A similar map app was recently made available for Deep Silver's open-world zombie adventure Dead Island.
Batman: Arkham City was released on Xbox 360 and PlayStation 3 last week, and will be available on PC next month.
> Batman: Arkham City: Your questions answered
> Read our five star review of Batman: Arkham City
> Feature: Batman: Arkham City: How the Dark Knight went open-world
Watch the Batman: Arkham City launch trailer below: