Basically a kind of different take on the time loop day. Also, referencing the movie Groundhog Day which is based on the same concept except that this movie is the teenage version of Groundhog Day. Other movies include Happy Death Day/2U, Edge of Tomorrow, Repeaters, Before I Fall, Mrs. Peregrine’s Home For Peculiar Children and (the aforementioned) Groundhog Day and so forth.
A good movie but the last perfect moment is a bit... Non-existent? I know people are saying that its them kissing but all the other perfect moments are an anomaly that happens every single day in the time loop without fail so their kiss wouldn't be part of that.
My favourite, however, would have to be Palm Springs still.
But The Map of Tiny Perfect Things is indeed a good movie and a recommended watch. Unless there's no part 2 because of the ending of course.