Each guide in the list can be installed independently for no charge. The tours include museum guides, heritage trails and audio guides. Many of the trails include location triggering using GPS or Bluetooth Beacons to detect where you are on the tour and automatically show you relevant content. However, you do not need to be in the location in order to access the content in the guide. GPS and Bluetooth are used in a power-efficient way. However, as with all apps that use location, please note