iMark vs Knowing Body
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
iMark
Easily manage your reading progress with digital bookmarks. Quickly return to your last page and track all the books you've read. Share your progress with friends and family.
- Manage digital bookmarks
- Track reading progress
- Add favorite bookmarks
- View completed books
- Siri voice command integration
- Share reading progress
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Digital bookmarks are here! Finding your current page in a book is simpler than ever! iMark allows you to use digital bookmarks easily on your iOS devices. The next time you pick up a book, simply open iMark and get back to where you left off quickly. All your digital bookmarks are safely stored in iMark! Features - Manager all your digital bookmarks in one place - Track your books reading progress - Add favorite bookmarks - See all the books you’ve completed - Siri Integration: Effortlessly add new bookmarks using Siri's voice commands - Share reading progress with family & friends!
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: iMark at every 9 days against Knowing Body's every 5 weeks. Knowing Body's advantage is iOS requirement (15.1 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
iMark ships an update every 9 days, Knowing Body every 5 weeks. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.
| Parameter | iMark | Knowing Body |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (1 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 9 days — better | Every 5 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 5 MB | 63 MB |
| Age rating | 4+ | 4+ |
| Developer | Matan Reiman | ZHIWEN YOU |
In-app purchases
iMark
No in-app purchases
Knowing Body
No in-app purchases
Questions
Is iMark free?
Is Knowing Body free?
Do iMark or Knowing Body have ads?
Which is updated more often, iMark or Knowing Body?
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