# The Human Body by Tinybop vs PhET Simulations

The clearest difference is in-app purchases: PhET Simulations at none against The Human Body by Tinybop's 1. PhET Simulations also leads on rating (4.5 vs 4.2) and price ($0.99 vs $3.99). The Human Body by Tinybop's advantage is update cadence (every 5 months vs every 14 months) and ratings volume (403 vs 48). On review sentiment, ads, device support and iOS requirement there is nothing between them.

The Human Body by Tinybop costs $3.99 and PhET Simulations $0.99 up front. The Human Body by Tinybop sells 1 one-off in-app purchase. PhET Simulations asks for nothing beyond the download.

PhET Simulations holds the better App Store score, 4.5 against 4.2. That said, the two scores are not equally well evidenced: The Human Body by Tinybop has 403 ratings behind it against 48, so its average is the more settled of the two. Written reviews complicate that: 67% of The Human Body by Tinybop's written reviews are positive against 66% of PhET Simulations's, so the app with the better star average is not the one people write more warmly about.

The Human Body by Tinybop ships an update every 5 months, PhET Simulations every 14 months. Both last shipped on November 11, 2026.

## The numbers

| Metric | The Human Body by Tinybop | PhET Simulations |
| --- | --- | --- |
| Price | $3.99 | **$0.99** |
| Rating | [4.2 (403 ratings)](https://appshunter.io/ios/app/the-human-body-by-tinybop/id682046579/reviews) | **[4.5 (48 ratings)](https://appshunter.io/ios/app/phet-simulations/id1134126831/reviews)** |
| Number of ratings | **403** | 48 |
| Positive reviews | **67.0% of reviews** | 65.5% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 14 months |
| Monetization | **Free with in-app purchases** | Paid |
| Best chart rank | — | **#27** |
| Size | 125 MB | 125 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Tinybop Inc.](https://appshunter.io/developer/682046582) | [University of Colorado Boulder](https://appshunter.io/developer/972210292) |

## 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 (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| The Urogenital 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


### PhET Simulations

[App page](https://appshunter.io/ios/app/phet-simulations/id1134126831)

**Currently charting:** #27 Top Paid · Education (US App Store)

Explore science and math concepts through interactive simulations. This app provides over 75 HTML5 simulations for learning about atoms, energy, multiplication, and more. It's ideal for students, parents, and educators, offering offline access and multiple language support.

**Highlights:** Interactive science and math simulations, Offline play capability, Multiple language support, Customizable favorites collection, Automatic simulation updates, Easy simulation sorting

**Features:** macOS Compatibility, Vision Pro support

**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 PhET Simulations free?

PhET Simulations costs $0.99, with no in-app purchases.

### Which has better reviews, The Human Body by Tinybop or PhET Simulations?

PhET Simulations is rated higher. The Human Body by Tinybop averages 4.2 out of 5 from 403 ratings, while PhET Simulations averages 4.5 from 48 ratings.

### Do The Human Body by Tinybop or PhET Simulations have ads?

Neither The Human Body by Tinybop nor PhET Simulations shows ads.

### Which is updated more often, The Human Body by Tinybop or PhET Simulations?

The Human Body by Tinybop ships an update every 5 months, and PhET Simulations every 14 months. Most recently, The Human Body by Tinybop was updated on November 11, 2026 and PhET Simulations on November 11, 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.*