Every Day is a romantic movie about a married couple, with a supernatural gimmick. It has some funny moments, but is not really a comedy, more of a sentimental drama. There have been many movies with a similar plot, and it follows common patterns, but without plot holes.
Where it differs is the atmosphere, which is calm, clean, and contemplative. There is a lot of silence. Sometimes there is piano background music. The style is realistic, depicting every-day office-worker life. Adding to this it has an gimmick of depicting memories via photographs.
It seems that it wants to express certain ideas. How much it is successful in this is unclear. Most people would probably not find much of interest, but there might be a few who can recognize something that is relatable to their own life.
However, there is a sense of emptiness because of things missing. A practical example of this is when one character was said to be somewhere, but we never got to actually see it. This creates a sense of unrealness and needless suspicions of an unreliable narration.
Another example is that the secondary characters do not always behave as if they are aware of the main plot, even if it is no secret to them, so their dialogues and actions are sometimes misplaced considering the situation.
A more concerning point is the relationship within the married couple. They are cute together, but even though a bit of background story is given, there is no evidence of passion or any real explanation of the reason why they married in the first place. It seems almost like a marriage of convenience.
The best acting performance was clearly made by the actor of the male protagonist, who was able to make varied and detailed face expressions, and delivered emotional lines in a believable way. Unfortunately, the writing makes the character spineless and empty. He is just an ordinary man working to support his family, while everyone is constantly nagging him about how lazy and pathetic he is. He has many mannerisms but does not seem to have any interests or individual thoughts outside of what concerns the plot. To be clear, the problem is not that he is weak, but that he is lacking an inner life except for his reactions.
Other actors are also very good, and the quality is generally good, with some nice or intense scenes, and also subplots for the secondary characters.
Many viewers might find it a boring humiliation ritual to watch a depressed man getting disrespected by random people. But it also gives you things to think about. Maybe it is depressing enough to get interesting.