# The Human Body by Tinybop vs Trading Matrix

The clearest difference is price: Trading Matrix at Free against The Human Body by Tinybop's $3.99. Trading Matrix also leads on in-app purchases (none vs 2) and update cadence (every 2 weeks vs every 5 months). On ads, device support and iOS requirement there is nothing between them.

Trading Matrix is free to download; The Human Body by Tinybop costs $3.99 up front. The Human Body by Tinybop sells 2 one-off in-app purchases. Trading Matrix asks for nothing beyond the download.

The Human Body by Tinybop ships an update every 5 months, Trading Matrix every 2 weeks. The most recent releases landed on October 26, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | The Human Body by Tinybop | Trading Matrix |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| Rating | **[4.2 (401 ratings)](https://appshunter.io/ios/app/the-human-body-by-tinybop/id682046579/reviews)** | — |
| Number of ratings | **401** | — |
| Positive reviews | 67.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 125 MB | 50 MB |
| Requires iOS | **15.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [Tinybop Inc.](https://appshunter.io/developer/682046582) | [Trading Matrix](https://appshunter.io/developer/6793776158) |

## What reviewers say

### The Human Body by Tinybop

[App page](https://appshunter.io/ios/app/the-human-body-by-tinybop/id682046579)

Explore the human body through interactive models of its systems. Discover how the heart beats, lungs breathe, and more. This app is designed for children and adults to foster foundational science literacy through engaging exploration.

**Highlights:** Explore 8 interactive body systems, Detailed interactive models of organs, Simulate body functions, Learn vocabulary in 50+ languages, Kid-friendly design with avatars, Expert-reviewed handbook included

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| The Urogenital System | $0.99 | one-time |
| The Immune System | $0.99 | one-time |

**What reviewers like**

- 🚀 Visually appealing
- 👍 Interactive and engaging
- 🧠 Helps kids learn about the body
- 🎓 Educational and informative

**What reviewers complain about**

- 🐛 Crashes frequently
- 🤔 Confusing navigation and UI
- 💰 Expensive for limited content
- 🔇 Lack of audio/voice instructions

**Reported bugs**

- Inability to restore in-app purchases
- Compatibility issues with newer iOS versions
- Freezing and crashing on certain actions

**Requested features**

- Add more body systems (e.g. endocrine, lymphatic)
- Include pronunciations of body part names
- Provide more detailed explanations of processes
- Allow customization of the human model


### Trading Matrix

[App page](https://appshunter.io/ios/app/trading-matrix/id6793776155)

**In-app purchases:** none


## Frequently asked questions

### Is The Human Body by Tinybop free?

The Human Body by Tinybop costs $3.99, and also offers in-app purchases.

### Is Trading Matrix free?

Trading Matrix is free to download, with no in-app purchases.

### Do The Human Body by Tinybop or Trading Matrix have ads?

Neither The Human Body by Tinybop nor Trading Matrix shows ads.

### Which is updated more often, The Human Body by Tinybop or Trading Matrix?

The Human Body by Tinybop ships an update every 5 months, and Trading Matrix every 2 weeks. Most recently, The Human Body by Tinybop was updated on October 26, 2026 and Trading Matrix on October 14, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*