Trapla is the application done with the theme of the exchange between the travelers.
"There is much information, but if I travel, how dont you know whether it becomes fun?" "Id like to travel, but Id like to go in large numbers.".
Its Trapla that such desire can be granted by itself.
A plan of travel is planned by itself, and its that travelers with the same purpose gather in the plan, and its possible to do travel together while exchanging information.