Countdown is a 2019 American supernatural horror film directed and written by Justin Dec, and starring Elizabeth Lail, Jordan Calloway, Talitha Bateman, Tichina Arnold, P.J. Byrne, Peter Facinelli, Anne Winters, and Tom Segura. The plot follows a group of people who discover a mobile app that correctly tells its users when they are going to die.

Thomas Weston Segura is an American stand-up comedian, writer, author, actor, and podcaster. Segura co-hosts the Your Mom's House podcast with his wife, fellow comedian Christina Pazsitzky. Segura also co-hosts the podcast Two Bears One Cave with friend and fellow comedian Bert Kreischer.