This is how analytics applications work. Almost every website you visit has Google Analytics installed, which sends your data to their servers so that the developer gets a better understanding of their users.
Apps aren't an exception, you'll find it in almost all of them. When you install the app it should notify you what is does or doesn't have access to, so things like your phone book and call history are not accessible for the app.
Apps aren't an exception, you'll find it in almost all of them. When you install the app it should notify you what is does or doesn't have access to, so things like your phone book and call history are not accessible for the app.