As far as i know, they have site for their token and that site will have the information that you need in order to determine if what is the purpose of your particular token or what it is all about. A token is mostly from the ethereum blockchain and they created token because of their ideas that they want to share to other people to possibly solve a current issue.
Some tokens are used inside applications designed in Android or ios. Some of the tokens are utilized for product or service purchases. They are the usage of those tokens. Some of the tokens are like securities.