Continuity mistake: David gets a stain on the right side of his shirt while testing the machine, but in the video of his 7th birthday party, which proves he travelled back in time, the stain is on the left side of his shirt.
Project Almanac (2014)
1 continuity mistake - chronological order
Directed by: Dean Israelite
Starring: Sofia Black-D'Elia, Jonny Weston, Sam Lerner, Allen Evangelista
Factual error: They find an old video camera from their dad, but that camera is already 10 years old. And the battery just works?
David Raskin: Sorry guys. I would never do anything to hurt you guys. You'll never even know it happened.