Scott Wise’s review published on Letterboxd :
For its obvious faults, especially its mixed-calibre performances, indulgent camerawork and explanatory crutches, Coherence is a though experiment worthy of its predecessors (Primer and TimeCrimes, most notably). That is, if you can accept its primary conceit.
Notably, the film’s obviously limited budget and setting (mostly in one interior composed of a handful of rooms) is not one of the film’s faults - in fact, it’s probably one of the film’s greatest strengths. That, and a compelling narrative that isn’t afraid to drift towards the darker ramifications of its concept, makes Coherence a surprisingly confident debut for a relatively unknown filmmaker, and one well worth spending an hour and a half with.