A new mobile discovery network, Trover, gives users the chance to introduce local explorers to hidden gems right outside their door. Trover is a free smartphone app, which is also accessible from its web site at Trover.com. The app is designed for sharing discoveries, interesting things to see or do, in your city or a city you happen to be visiting, in order to help someone else enjoy the discovery just as you did. In other words, it’s a place exploration tool.