The industry has come up with a few phrases for this
"Free as in beer" you get something, you don't have to pay.
"Free as in speech" you have the rights to do things, like modify source code.
and later
"Free as in puppies" As in you get it for free, but it's gonna cost you later. Most open source software is like this, you get it, but have to invest is using/mastering/maintaining it. Of course, you have to invest like this in paid, software as well.
"Free as in beer" you get something, you don't have to pay. "Free as in speech" you have the rights to do things, like modify source code.
and later
"Free as in puppies" As in you get it for free, but it's gonna cost you later. Most open source software is like this, you get it, but have to invest is using/mastering/maintaining it. Of course, you have to invest like this in paid, software as well.