Comparison

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.

Head to head
About

The Spirits' Book

Features
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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!

About

Knowing Body

Features
Read full description

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

The Spirits' Book4 screens
Knowing Body4 screens

Verdict

The call

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

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.

Scorecard2 real differences ยท 4 level
The Spirits' Book versus Knowing Body: the parameters behind the verdict, then further details
ParameterThe Spirits' BookKnowing Body
PriceFreeFree
Update frequencyEvery 2 days โ€” betterEvery 5 weeks
AdsNoNo
In-app purchasesNoNo
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS12.0 โ€” better15.1
Further details โ€” not scored
Size53 MB63 MB
Age rating4+4+
DeveloperJulio ConceicaoZHIWEN YOU

In-app purchases

None

The Spirits' Book

No in-app purchases

None

Knowing Body

No in-app purchases

Questions

Is The Spirits' Book free?
The Spirits' Book is free to download, with no in-app purchases.
Is Knowing Body free?
Knowing Body is free to download, with no in-app purchases.
Do The Spirits' Book or Knowing Body have ads?
Neither The Spirits' Book nor Knowing Body shows ads.
Which is updated more often, The Spirits' Book or Knowing Body?
The Spirits' Book ships an update every 2 days, and Knowing Body every 5 weeks. Most recently, The Spirits' Book was updated on May 16, 2026 and Knowing Body on September 20, 2026.

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