One of the best things of traveling around the world is connecting with different people and sharing each other's experiences. However, sometimes we become conscious of other person's thoughts before seeking company as a friend. In such cases, Couchsurfing will help you out while traveling. 
Couchsurfing is the platform where you can find friends across the world. Suppose, you are traveling somewhere and are on a solo trip, the app allows you to make like-minded friends. Couchsurfing has more than 5 million downloads and received 4.3 ratings on the PlayStore.