Before You Leap is a fun, light-hearted book. Readers will have laughs and enjoy themselves. This is a great story for science fiction lovers.
There are some gender bending twists to the story that challenge the characters and the plot. The book keeps you guessing with future directions. It gives you a lot to think about relating to time travel and our reactions to gender.
I think most readers would enjoy this read, especially if they would like explanations and theorizing about time travel science. I think the level is suitable for middle grade on up. Give it a try.