# 3D Fish Anatomy vs World Explorer Pro

The clearest difference is price: World Explorer Pro at Free against 3D Fish Anatomy's $11.99. World Explorer Pro also leads on update cadence (weekly vs every 20 months). 3D Fish Anatomy's advantage is in-app purchases (none vs 1) and iOS requirement (12.0 vs 18.2). On ads and device support there is nothing between them.

World Explorer Pro is free to download; 3D Fish Anatomy costs $11.99 up front. World Explorer Pro sells 1 one-off in-app purchase. 3D Fish Anatomy asks for nothing beyond the download.

3D Fish Anatomy ships an update every 20 months, World Explorer Pro weekly. The most recent releases landed on October 26, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | 3D Fish Anatomy | World Explorer Pro |
| --- | --- | --- |
| Price | $11.99 | **Free** |
| Rating | **[4.5 (2 ratings)](https://appshunter.io/ios/app/3d-fish-anatomy/id1151204663/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 20 months | **Weekly** |
| Monetization | Paid | — |
| Size | 115 MB | 9 MB |
| Requires iOS | **12.0** | 18.2 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [Biosphera](https://appshunter.io/developer/569303204) | [ChatStick Company Limited](https://appshunter.io/developer/1165816085) |

## What reviewers say

### 3D Fish Anatomy

[App page](https://appshunter.io/ios/app/3d-fish-anatomy/id1151204663)

Explore the detailed internal and external anatomy of a perch with an interactive 3D model. View and manipulate systems layer by layer or simultaneously, highlighting structures with captions. Ideal for zoology, ichthyology, and fish biology studies.

**Highlights:** Interactive 3D perch model, View internal and external anatomy, Layer-by-layer system exploration, Adjustable zoom levels, Highlight anatomical structures with captions, Multi-language support

**Features:** Vision Pro support

**In-app purchases:** none


### World Explorer Pro

[App page](https://appshunter.io/ios/app/world-explorer-pro/id6746413810)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All Feature | $0.99 | one-time |


## Frequently asked questions

### Is 3D Fish Anatomy free?

3D Fish Anatomy costs $11.99, with no in-app purchases.

### Is World Explorer Pro free?

World Explorer Pro is free to download, with in-app purchases available.

### Do 3D Fish Anatomy or World Explorer Pro have ads?

Neither 3D Fish Anatomy nor World Explorer Pro shows ads.

### Which is updated more often, 3D Fish Anatomy or World Explorer Pro?

3D Fish Anatomy ships an update every 20 months, and World Explorer Pro weekly. Most recently, 3D Fish Anatomy was updated on October 26, 2026 and World Explorer Pro on October 28, 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.*