Cal and the amazing anti-gravity machine
Age rating: Ages 10–13 · Children
Age rating and Christian content guidance for parents.
First published 2006
A young inventor creates a remarkable machine that defies gravity, leading to exciting adventures. The story focuses on scientific curiosity and problem-solving.
Concern Level
Clean
Virtue Level
Thin
Concern Level
Clean
Virtue Level
Thin
What is Dokilit?
Dokilit is an AI-powered content guide for Christian parents. We analyse books through the lens of faith and family, then show you the concerns, the virtues, and the conversation points that matter for your home.
Things to consider
Higher = more presentNo romantic or sexual content is present.
No violence is depicted in the story.
No profanity is used by the characters.
No blasphemous language appears in the text.
No substance use is part of the narrative.
No themes of suicide or self-harm are present.
The story contains no scary elements.
Occult or witchcraft themes are absent.
No LGBTQ+ themes are present in the book.
The worldview presented is neutral and focused on science.
No negative portrayals of God or Christians are present.
Virtues to celebrate
Higher = stronger presenceCal shows courage in testing his inventions.
Christian faith is not a component of the story.
Friendship and family support are shown.
No themes of grace or repentance are present.
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