# Circulatory System 3D Anatomy vs CT

The clearest difference is review sentiment: CT at 100% against Circulatory System 3D Anatomy's 53%. CT also leads on rating (4.5 vs 3.8) and iOS requirement (13.0 vs 15.0). Circulatory System 3D Anatomy's advantage is ads (none vs shown) and monetization model (free vs ad-supported). On price, ratings volume, update cadence and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

CT holds the better App Store score, 4.5 against 3.8. Both are backed by a comparable volume of ratings — 30 and 12 respectively. Written reviews point the same way: 53% of Circulatory System 3D Anatomy's written reviews are positive against 100% of CT's.

Circulatory System 3D Anatomy ships an update every 15 months, CT every 12 months. The most recent releases landed on October 24, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Circulatory System 3D Anatomy | CT |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.8 (30 ratings)](https://appshunter.io/ios/app/circulatory-system-3d-anatomy/id1450587587/reviews) | **[4.5 (12 ratings)](https://appshunter.io/ios/app/ct-computed-tomography/id1562592280/reviews)** |
| Number of ratings | **30** | 12 |
| Positive reviews | 53.3% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 15 months | **Every 12 months** |
| Monetization | **Free** | Ad-supported |
| Size | 104 MB | 55 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Victor Gonzalez Galvan](https://appshunter.io/developer/942226041) | [Fabricio Tarter](https://appshunter.io/developer/1533271635) |

## What reviewers say

### Circulatory System 3D Anatomy

[App page](https://appshunter.io/ios/app/circulatory-system-3d-anatomy/id1450587587)

Explore the human circulatory system in an interactive 3D environment. Learn about the heart, veins, and arteries, and understand how blood circulates to transport oxygen and nutrients. Ideal for students and health enthusiasts.

**Highlights:** Realistic 3D circulatory system model, Detailed vein and artery descriptions, Circulatory system function information, Intuitive and easy-to-use interface, Interactive exploration of heart, veins, arteries

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

**In-app purchases:** none


### CT

[App page](https://appshunter.io/ios/app/ct-computed-tomography/id1562592280)

This app provides a didactic and effective way for students, radiologists, and bio-image graduates to learn and reinforce their knowledge of computed tomography protocols. It features a human body model with selectable protocols, detailing essential information for each study.

**Highlights:** Human body model for protocol selection, Detailed protocol information, Indications and preparation guidance, Scout view and FOV details, Cut thickness and gap information, Window settings and reconstruction plans, Protocol-specific images

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

**In-app purchases:** none


## Frequently asked questions

### Is Circulatory System 3D Anatomy free?

Circulatory System 3D Anatomy is free to download, with no in-app purchases.

### Is CT free?

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

### Which has better reviews, Circulatory System 3D Anatomy or CT?

CT is rated higher. Circulatory System 3D Anatomy averages 3.8 out of 5 from 30 ratings, while CT averages 4.5 from 12 ratings.

### Do Circulatory System 3D Anatomy or CT have ads?

CT shows ads; Circulatory System 3D Anatomy does not.

### Which is updated more often, Circulatory System 3D Anatomy or CT?

Circulatory System 3D Anatomy ships an update every 15 months, and CT every 12 months. Most recently, Circulatory System 3D Anatomy was updated on October 24, 2026 and CT on October 31, 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.*