Mackie and Dornan do their best with their intrepid characters (though Dornan is sidelined for much of the time), while the women have little opportunity to register as interesting characters.

Less successfully realized is the bond between the two heroes. Dornan is not as badly miscast here as he was in Fifty Shades of Grey, but Dennis is never a terribly engaging character.

A sci-fi inflected story...this might be the least successful of the creators' films, it does look a bit on the cheap...the initial idea is really interesting, but when you get down to it, it's a straight-to-video B movie...

The confidence in its style and drive in the grand scheme of things help to mask most of Synchronic's flaws [...]. As a result, viewers will still find themselves engrossed by the enthralling performances, visuals, and music.