In a teenage party, a group of friends download the app Countdown that predicts when the user will die. The teenager Courtney (Anne Winters) sees that she has just a couple of hours to live and does not accept the ride of her drunken boyfriend Evan (Dillon Lane). She walks home but she is killed by a supernatural creature when the timer in her cellphone reaches zero. Meanwhile Evan crashes his car at the same time of her death and he goes to a hospital where the nurse Quinn Harris (Elizabeth Lail) works. Evan discloses that he is afraid to go into surgery since the app Countdown predicts that he will die at the same time of the surgery. The doctors and nurses of the hospital decide to download the app and Quinn learns that she has only three days of life. When Evan mysterious dies in an accident at the hospital, Quinn buys a new cellphone and finds that the app is also installed. When she meets Matt Monroe (Jordan Calloway) at the parking lot of the store, she learns that his death is predicted for a couple of hours before her and they team-up to look for a means to break the curse.
"Countdown" is an entertaining horror film for fans of "Final Destination". The plot and the acting are not bad and Quinn Harris is a pleasant character. There are silly and unnecessary subplots, like the harassment of Dr. Sullivan, the priest that likes to joke or the romance of Quinn and Matt, but in general the movie is worthwhile watching. My vote is six,
Title (Brazil): "A Hora da Sua Morte" ("The Time of Your Death")