Definitely got my heart racing, although I did watch it in the dark, behind the computer and by myself :')
I assume it's low budget, but it was scarier than most horror movies out there. Aside from some silly details (, like why would you bring your computer/phone with you if none of the others in the call are watching), it was very realistic. One of the few downsides is that it is relatively predictable (, but nowadays that's unfortunately common in horror).
One of its main plusses is the script and acting: the conversations are very much like I speak with my friends and there are hardly any dumb lines that can ruin the experience. They also behave in different ways that make sense if you're scared out of your mind.
Also a big plus is that it doesn't try to (over)explain what is happening: it simply is scary and claustrophobic. And last but not least, it's a short movie with good pacing. They refrained from using fillers just to make it one and a half hours long, but chose quality over quantity. If you're a fan of horror, I definitely recommend this hidden gem.
One of its main plusses is the script and acting: the conversations are very much like I speak with my friends and there are hardly any dumb lines that can ruin the experience. They also behave in different ways that make sense if you're scared out of your mind.
Also a big plus is that it doesn't try to (over)explain what is happening: it simply is scary and claustrophobic. And last but not least, it's a short movie with good pacing. They refrained from using fillers just to make it one and a half hours long, but chose quality over quantity. If you're a fan of horror, I definitely recommend this hidden gem.