How to use SSH terminal on your iphone?

So i bought this app for a dollar called "SSH Terminal" and I can't seem to get it to work. When attempting to use it, it asks for the server title, hostname, username, password, and port number. I'm fairly new to this stuff and don't understand what I'm supposed to do here.

I use ssh on my macbook pro

Added (1). Yes, but what are these things and how do I get the information?

You need to enter the hostname, username and password of your server machine. The port would normally be 22 unless you have used a non standard port for it.