Ovulation test

Okay so I got a bunch of ovulation test strips now my question is how does it work lol do I pee on a stick everyday?Or am I suppose to wait until the week that this app says I am most firtile and when it says that I am most firtile is that when.we have sex or do I wait till the next day? This is my first time actually using the obviulation test if you can't tell haha PS. My period just ended two days ago.