Devil in the Device
Lora Beth Johnson
Devil in the Device
Age Rating, Reading Level & Content Guide
by Lora Beth Johnson
The text is written at a 8th grade reading level, the subject matter is intended for middle graders (ages 9–12), and the content has moderate intensity with some emotionally heavy themes.
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About This Book
Zhade just got a powerful new face and throne, but with great power comes deadly challenges. Magic is turning dangerous, and Tsurina's plans might destroy their world — but Zhade is starting to wonder if she might be right. Meanwhile, Andra hides underground, fighting voices in her head and building a rocket to save everyone, but what if she’s not the hero she thought she’d be?
Quick Assessment
Devil in the Device is the thrilling conclusion to a sci-fi duology that blends political intrigue and technological adventure. Suitable for middle-grade readers, it explores complex themes like identity, power, and what it means to be human, all within a richly imagined futuristic world. Parents should note the story includes elements of mental struggle and suspense but is appropriate for ages 9-12.
Why we rated Devil in the Device 12ME
Devil in the Device is written at a Level 8 reading level across 432 pages. Strong independent readers around grade 9.0 can typically handle this book on their own; with parent or teacher support, Devil in the Device works for readers up to grade 10.0.
We rate Devil in the Device as 12ME ("Moderate — Emotional") because the content sits in the "Moderate" range — moderate conflict that may involve loss, scary scenes, or interpersonal stakes. The strongest signals come from emotional weight, thematic difficulty — these are the dimensions parents should evaluate against their reader's tolerance.
No specific content flags were raised by community reviewers, which is consistent with the moderate intensity score.
Thematically, Devil in the Device explores science & nature, adventure, fantasy world-building, friendship, and coming of age — these threads give the book room to mean different things to different readers.
Good fit for
- ✓ Children in the Ages 9-12 range — the maturity and attention span match the story's pacing.
- ✓ Patient readers who enjoy slower, character-driven stories.
- ✓ Readers ready to talk through themes after they finish — there's enough substance for a meaningful conversation.
- ✓ Kids drawn to stories about science & nature, adventure, fantasy world-building.
Maybe not for
- ! Readers who get easily upset by emotional or moderately dark scenes — the conflict here is real, not just background flavor.
- ! Reluctant readers who need a fast hook — the pacing here rewards patience.
For Parents
Content Intensity
12ME — Moderate — EmotionalReal stakes and emotional weight. May include sustained danger, loss, or bullying.
Was our "Moderate" content intensity rating accurate for this book?
Reading Insights
Hook Factor
2/10A steady, thoughtful read that rewards patient readers.
Discussion Potential
4/10Good conversation starter with themes worth exploring together.
Book DNA
Multi-dimensional content fingerprint
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Details
Book Length
- ISBN
- 9781984835956
- Pages
- 432
- Publisher
- Penguin
- Published
- 2021
- Type
- Fiction