It's a free 'Skyrim' map, assuming you don't really want to do anything with it. If you want things to be displayed on the map, you'll pay as much as $10.
The new 'Skyrim' app released by Prima Games is a free interactive map that lets you zoom around the world, including the nine capital cities. If you want any more info, you'll have to pay for it. There are 15 different things you can add to the map, like dragon mounds, primary locations, and shrines. Each of those 15 different thing costs $0.99 to unlock. If you want to get the whole thing in one go, you'll pay $10.
The map is interesting, but considering it only contains information that you could easily find online for free, shelling out $10 for it seems pointless. You can browse the map and zoom in to a very high level, but this doesn't seem like much more than a fun app to explore - it's usefulness is questionable, especially so long after the game's initial release.
Source: Game Informer