Countdown (2019) is a modern horror thriller that taps into our collective anxiety about technology and fate. The film follows Quinn Harris, a dedicated nurse who downloads a seemingly innocuous app that claims to predict exactly when a user will die. When the app gives her a mere three days to live, she initially dismisses it as a morbid prank. However, as a sinister supernatural entity begins to haunt her, she realizes the countdown is terrifyingly real. Teaming up with a fellow target, Matt, Quinn must unravel the app's dark origins and find a way to cheat death before her time expires.

Director Justin Dec crafts a tense and efficiently paced narrative that leverages a simple, high-concept premise for maximum suspense. The film effectively builds dread as the digital clock relentlessly ticks down, and the malevolent entity—a shadowy, demonic figure—becomes increasingly aggressive. Elizabeth Lail delivers a compelling performance as Quinn, balancing vulnerability with determined resilience, while Jordan Calloway provides solid support as Matt. The screenplay smartly incorporates themes of privacy, digital dependency, and existential fear, making the horror feel relevant.

While its IMDb rating of 5.4 suggests it's not without flaws, Countdown succeeds as an entertaining and briskly paced genre piece. It offers genuine jump scares, a relatable technological hook, and a race-against-time plot that keeps viewers engaged. For fans of supernatural horror and tech-themed thrillers, Countdown is a worthwhile watch, providing 90 minutes of solid, suspenseful entertainment that questions what happens when an algorithm decides your fate.