Automatically turn wifi off when out of range

I would like to be able to automatically turn off wifi when I'm out of range of my home network. Is that possible? I see that many people have asked a similar question and it seems they want to do it to save battery life. I want to do it so that my phone is less vulnerable. I don't want it to do any location based stuff or searching for my home wifi so it automatically turns back on. I want to manually have to turn it back on when I get home. Anything like that available?

I've got a Verizon Samsung Galaxy S4.

Thanks
Nick