# Pocket Heart vs Biochemistry

The clearest difference is rating: Pocket Heart at 4.7 against Biochemistry's 2.0. Pocket Heart also leads on ratings volume (493 vs 2) and iOS requirement (12.0 vs 15.6). Biochemistry's advantage is monetization model (free with in-app purchases vs subscription) and update cadence (every 5 months vs every 11 months). On price, review sentiment, ads and in-app purchases there is nothing between them.

Both are free to download. Pocket Heart sells 2 in-app purchases, starting at $0.99 per month and Biochemistry sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Pocket Heart holds the better App Store score, 4.7 against 2.0. That said, the two scores are not equally well evidenced: Pocket Heart has 493 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 78% of Pocket Heart's written reviews are positive against 75% of Biochemistry's.

Pocket Heart ships an update every 11 months, Biochemistry every 5 months. The most recent releases landed on November 10, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | Pocket Heart | Biochemistry |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (493 ratings)](https://appshunter.io/ios/app/pocket-heart/id384060873/reviews)** | [2.0 (2 ratings)](https://appshunter.io/ios/app/biochemistry/id6446676647/reviews) |
| Number of ratings | **493** | 2 |
| Positive reviews | **77.8% of reviews** | 75.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 5 months** |
| Monetization | Subscription | **Free with in-app purchases** |
| Size | 226 MB | 46 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 12+ |
| Developer | [EMEDIA INTERACTIVE LIMITED](https://appshunter.io/developer/330292122) | [Dr. Wolfgang Ekkehard Merz](https://appshunter.io/developer/1678704826) |

## What reviewers say

### Pocket Heart

[App page](https://appshunter.io/ios/app/pocket-heart/id384060873)

This interactive 3D cardiology app offers a beautiful and engaging way to learn about the human heart. It features detailed anatomical and clinical content, intuitive navigation, and interactive quizzes for self-paced learning. Ideal for medical professionals, students, and educators.

**Highlights:** Interactive 3D heart model, Detailed anatomical and clinical content, Intuitive 3D navigation, Multiple quiz types for self-paced learning, Multimedia learning content, Patient communication tool

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $0.99 | per month |
| Annual Subscription | $9.49 | per year |

**What reviewers like**

- 🎨 Stunning 3D graphics and visual presentation
- 📚 Excellent educational resource for students and professionals
- 🔄 Interactive 3D rotation and zoom capabilities
- 💓 Realistic heart animation and beating visualization
- 👨‍⚕️ Useful tool for doctors to explain to patients

**What reviewers complain about**

- ❌ Incorrect quiz answers and medical inaccuracies
- 🐛 Heartbeat sound feature not functioning
- 📐 Layout issues - text too small and menu positioning problems
- 💳 Misleading free trial payment model
- 🔧 Limited customization options

**Reported bugs**

- Heartbeat sound/audio playback not working
- Menu displaying vertically instead of at bottom on some devices
- Difficulty rotating heart on iPhone 5
- Reduced zoom capability in newer versions
- Compatibility issues with newer iOS versions

**Requested features**

- Adjustable text size and menu positioning
- Apple Watch integration with real-time heart rate sync
- Customizable heart pulse/beat rate
- Internal 3D heart dissection from multiple angles
- Visualization of heart pathologies and diseases (myocardial infarction, arrhythmias, congenital defects)


### Biochemistry

[App page](https://appshunter.io/ios/app/biochemistry/id6446676647)

Explore a detailed interactive map of biochemical reactions, covering carbohydrates, lipids, amino acids, and energy metabolism. Navigate through three competence levels, from a basic overview to expert-level details including hereditary diseases. Access chemical formulas, enzyme names, and more with a tap, and utilize search, notes, and bookmarks for efficient study.

**Highlights:** Interactive metabolism map, Three competence levels (overview to expert), Hereditary disease references, Chemical formulae and enzyme names, Synopsis chapters for pathways, Search function, Notes and bookmarks

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro version | $3.99 | one-time |


## Frequently asked questions

### Is Pocket Heart free?

Pocket Heart is free to download, with in-app purchases available.

### Is Biochemistry free?

Biochemistry is free to download, with in-app purchases available.

### Which has better reviews, Pocket Heart or Biochemistry?

Pocket Heart is rated higher. Pocket Heart averages 4.7 out of 5 from 493 ratings, while Biochemistry averages 2.0 from 2 ratings.

### Do Pocket Heart or Biochemistry have ads?

Neither Pocket Heart nor Biochemistry shows ads.

### Which is updated more often, Pocket Heart or Biochemistry?

Pocket Heart ships an update every 11 months, and Biochemistry every 5 months. Most recently, Pocket Heart was updated on November 10, 2026 and Biochemistry on November 7, 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.*