The Spirits' Book vs Knowing Body
Price, ratings, monetisation and update history for both apps, side by side โ with what reviewers say about each.
The Spirits' Book
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The application was created to stimulate the reading of the Book of Spirits at any time of the day. A stimulus for reading when you are not with a book nearby, whether you are on the bus, at a free time in the study / work. The choice of text is random, each will only repeat when all parts of the book are chosen. When you open a section, below you will have a button available to view the whole chapter if you want to better understand the context of what you have read. May the good energies always be with you and good reading!
Knowing Body
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Discover Your Body, Know Yourself. Knowing Body is an educational app that helps you explore the human body in a clear, engaging, and systematic way. Whether you're a student, a parent, or just someone curious about how the body works, Knowing Body brings anatomy and physiology to life with beautifully structured content and interactive features. Key Features: Human Body Overview: Learn about each body system, from the circulatory to the nervous, with clear explanations and diagrams. Daily Knowledge: Bite-sized facts about the body delivered every day to keep your curiosity alive. Body Dictionary: A bilingual (Chinese-English) dictionary of anatomical terms with easy-to-understand definitions. Knowledge Quiz: Test yourself with interactive quizzes to reinforce what you've learned. Featured Articles: Dive deeper with curated articles on health, anatomy, and body systems. Start your journey of knowing the amazing body you live in!
Screenshots
Verdict
The clearest difference is update cadence: The Spirits' Book at every 2 days against Knowing Body's every 5 weeks. The Spirits' Book also leads on iOS requirement (12.0 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
The Spirits' Book ships an update every 2 days, Knowing Body every 5 weeks. The most recent releases landed on May 16, 2026 and September 20, 2026 respectively.
| Parameter | The Spirits' Book | Knowing Body |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 days โ better | Every 5 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 โ better | 15.1 |
| Further details โ not scored | ||
| Size | 53 MB | 63 MB |
| Age rating | 4+ | 4+ |
| Developer | Julio Conceicao | ZHIWEN YOU |
In-app purchases
The Spirits' Book
No in-app purchases
Knowing Body
No in-app purchases
Questions
Is The Spirits' Book free?
Is Knowing Body free?
Do The Spirits' Book or Knowing Body have ads?
Which is updated more often, The Spirits' Book or Knowing Body?
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