I think this book was ok, but it wasn’t super great.

I loved reading this book, it was life changing!!!

I think this book was okay. In some parts it was scary, though.

Cool book. The math isn't hard and the story has some twists. I liked it.

Idk what other people were talking about, this is a fantastic book. If you like a good mystery this is for you. I would maybe recommend it to older/more advanced readers since some reviewers seem to be confused by the storyline.