Jane Lawson’s review published on Letterboxd:
Especially difficult to watch in the beginning, the conversation starter beyond "What Happened to Monday" is perhaps what we need to be discussing in the world today. It was a bit of a weird movie; some familiar (to me) Brazilian actors are in it.
I enjoyed most how each septuplet had her own fully-fleshed personality, right to the end.
The end did confuse me a bit, however. (I won't spoil it, though.)
It reminded me a bit of "The Giver" and "The Hunger Games".