The film has plenty of good jump scares and really intense scene's, that build suspense really well. However apart from Ellison Oswalt's Character, there wasn't any strength, depth or any caring of the other character's in this film what so ever. But overall, enjoyed this.
This film truly utilizes a "less is more" approach, and seeks to plant dreadful things in the audience's mind to dwell on after the film is over, rather than merely placate them with a bunch of cheap jump scares, pointless violence, and obligatory gore. It is a slow burner, requiring a little commitment on the part of the audience, that pays off in the end. If you're looking for a faster paced gut-wrencher, this film won't meet that demand. However, if you're looking for a macabre story to leave you feeling awful after an hour and change, this one might be worth a look.
Also, whether or not you enjoy this first film, DO NOT watch the sequel. Whatever good points this movie has are shot in its failure of a successor, starting at the ankles and working on up.
In comparison to other Horror Movies of its kind, I would say it is stronger than Insidious and the Conjuring, but said franchises are a lot better than this and the mess that is Sinister 2