The app is useful, but back it up with a physical map of the museum, if youre taking kids and trying to avoid emptying your wallet at every gift shop. The app gives you directions to the exhibits.... But in structured steps so you cant see your whole route, and only later realize you went the longest most foolish way possible, structured to make you pass through every gift shop in the museum unnecessarily. Also, app relies on Bluetooth.... Which doesnt work at all, in the exhibits you have no service in, like the ocean hall.