Many people do not take the Terms of Use (also called Terms of Service or Terms and Conditions) very seriously. The agreement can be many pages long and usually doesn’t even require the user to expressly accept its terms. So most people don’t even read them…but, in most cases, your use of the mobile app or website, is construed as your agreement to these terms (which can change at any time, by the way) and they constitute a legally binding agreement between the provider of the software and the user. 

You got that, right? When you are using a mobile app, you are “signing” a contract with the app provider.