Now I've seen It Follow and Countdown as well and this one looks like their baby. Sure, the latter one appeared after You Die, but this is a mix between them. If I were to choose between You Die and Countdown, I'd pick the second one because that one tries to be its own movie.
The similarities between the italian production and It Follows are simply too many to take the movie seriously. Even more a lot of the spreading happens between people that are engaging in sexual acts, so come on, show some originality, make it seem fresh just a little.
I'm telling you the biggest difference between these two movies is the language, so you could try it out in order to see a lookalike. Italy is known in its older cinema for copying a lot of monster movies and other horror productions, and I guess this one is proof that it still happens every now and then. I've seen some recent Italian horrors, this one being the first that is too much of the same, so overall, I'll let it slip as an accident.
Also the very beginning of the movie reminded me of Creep (2004) a little, and I think that was a nice touch. Thus all in all watch it but know what to expect, otherwise it might seem infuriating.
Cheers!