3 stars out of 5 -- "[A]s in all the PARANORMAL films, we watch as things move and creak and groan for no apparent rational reason, until the irrational reasons become terrifyingly apparent."
Box Office

"[I]t crafts its frights out of its everyday suburban trappings, from doors creaking open or slamming shut by themselves to household items crashing down from places they shouldn't be, or moving by themselves."
Movieline

3 stars out of 5 -- "[T]his is a step up from prequel PA3, a rumbling ghost train of (nervous) giggles, fake scares and real ones."
Total Film

"[T]he PARANORMAL ACTIVITY franchise boasts a complex narrative structure, with sequels filling in backstory or offering parallel events."
Sight and Sound