The film was not screened for critics. It received an "F" from
CinemaScore, which tracks audience reaction. The film topped the box office on its opening weekend, the first after the
New Year's Day holiday (referred to as the
dump months). It displaced
Mission: Impossible – Ghost Protocol, which had held the position for three straight weeks. In its second weekend, the film dropped 76.2%, the largest second weekend drop for a film since
Jonas Brothers: The 3D Concert Experience dropped 77.4%. Peter Howell of the
Toronto Star wrote that the film was a candidate for the worst film of the year. Stephen Whitty of
The Star-Ledger wrote, "After
The Blair Witch Project got by with sticks and stones and offscreen noises, filmmakers started thinking they didn't have to show anything. Well, no. It's better when you don't show too muchbut if your story is about the supernatural, eventually you're going to have to come up with something.
The Devil Inside can't." Michael Phillips of the
Chicago Tribune felt that the film "joins a long, woozy-camera parade of found-footage scare pictures, among them
The Blair Witch Project, the
Paranormal Activity films and certain wedding videos that won't go away". Michael Rechtshaffen of
The Hollywood Reporter stated that the film "proves as scary and unsettling as a slab of
devil's food cakeonly considerably less satisfying".
The New York Times reviewer
Manohla Dargis had a positive response to Crowley's acting and the scenes where the possessed is played by a contortionist, but said the film was just another foray into "a tediously exhausted subgenre that was already creatively tapped out when
The Blair Witch Project spooked audiences more than a decade ago". The film's ending received particular criticism. David Haglund of
Slate asked whether it is the worst movie ending of all time, citing various negative audience reactions. He wrote, "What upset them even more than its abruptness was the title immediately following it that urged audiences to visit a website to learn more. [It's] a marketing twist that makes audiences feel taken advantage of." Social media was flooded with videos of furious audience reactions, including one video showing an audience loudly booing and demanding refunds from Paramount. Some pointed out the website link being the worst addition, as they felt they paid admission to an incomplete film and were rewarded with an ending website title card that did not work. Bell defended the film by pointing out that the title card directing to a website was added by Paramount, given they "thought it was kind of cool to continue the story on this website". Joe Leydon of
Variety wrote that the film "generates a fair amount of suspense during sizable swaths of its familiar but serviceable exorcism-centric scenario". == Legacy ==