I think what bugged me most were the testimonials - this is definitely not the "next Hunger Games".

In summary: two ships are in space, bound to colonize "new Earth" after an environmental collapse. One ship has very religious types, the other a more secular mix. Long-term space travel has caused sterility in both ships; the secular solves the problem and a party from the religious ship attacks and captures all female children. Most of the adults die in this attack, leaving only the male children.

So the secular ship experiences a "Lord of the Flies", while the females on the religious ship experience oppression and violation. Specific quibbles include:
1) Bad science fiction
2) A Muslim character on the secular ship (and he is the most sympathetic of the story)
3) A direct appearance by God

This is the first book of a series. It barely stands alone, and that only if you skip the Epilog. The main female character is written well enough; the main male characters are caricatures of power seekers. I had no idea what message about religion the author was trying to convey, and have no desire to read more books to find out. While this is young adult and some bad science fiction could be excused (I'm looking at you, Hunger Games), this book is over-the-top.