google maps https://play.google.com/store/apps/details?id=com.google.android.apps.maps journey pro https://play.google.com/store/apps/details?id=com.navitime.journeypro national rail enquiries https://play.google.com/store/apps/details?id=uk.co.nationalrail.google thetrainline https://play.google.com/store/apps/details?id=com.thetrainline tripadvisor 是用这种 city guide,不是tripadvisor 本来的那个app https://play.google.com/store/apps/details?id=com.tripadvisor.android.apps.cityguide.london