Take Me to the Moon

These films are similar in such a way that certain characters either have issues with the past or want to change the past to save someone in the future. Orange touches on the parallel universe while Take Me To The Moon included magical time travel elements.

They both have time travel as the main theme with a mysterious object that helps them travel back to the past. Both of the main characters go back to the past to save someone who died and the setting is based in high school.