# CT Passport Head vs 3D解剖学アトラス：iRis

The clearest difference is price: CT Passport Head at $11.99 against 3D解剖学アトラス：iRis's $40.99. CT Passport Head also leads on update cadence (every 9 days vs every 44 months) and iOS requirement (8.0 vs 12.0). On ads, in-app purchases and device support there is nothing between them.

CT Passport Head costs $11.99 and 3D解剖学アトラス：iRis $40.99 up front. Neither carries in-app purchases, so what you see is what you pay.

CT Passport Head ships an update every 9 days, 3D解剖学アトラス：iRis every 44 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | CT Passport Head | 3D解剖学アトラス：iRis |
| --- | --- | --- |
| Price | **$11.99** | $40.99 |
| Positive reviews | — | 60.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 44 months |
| Monetization | — | Paid |
| Size | 67 MB | 491 MB |
| Requires iOS | **8.0** | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Kazuya Takayama](https://appshunter.io/developer/1115207317) | [株式会社Kompath](https://appshunter.io/developer/1230446483) |

## What reviewers say

### CT Passport Head

[App page](https://appshunter.io/ios/app/ct-passport-head/id1115207318)

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

**In-app purchases:** none


### 3D解剖学アトラス：iRis

[App page](https://appshunter.io/ios/app/3diris/id1230446484)

A detailed 3D anatomical atlas for medical professionals, offering high-definition models and search functionality. Explore intricate anatomical details, including fine nerves and vascular structures, for enhanced learning and education.

**Highlights:** High-definition 3D anatomical models, Searchable anatomical information, Model visibility controls, Cross-section visualization, Key atlas for critical anatomy

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

**In-app purchases:** none


## Frequently asked questions

### Is CT Passport Head free?

CT Passport Head costs $11.99, with no in-app purchases.

### Is 3D解剖学アトラス：iRis free?

3D解剖学アトラス：iRis costs $40.99, with no in-app purchases.

### Do CT Passport Head or 3D解剖学アトラス：iRis have ads?

Neither CT Passport Head nor 3D解剖学アトラス：iRis shows ads.

### Which is updated more often, CT Passport Head or 3D解剖学アトラス：iRis?

CT Passport Head ships an update every 9 days, and 3D解剖学アトラス：iRis every 44 months. Most recently, CT Passport Head was updated on October 24, 2026 and 3D解剖学アトラス：iRis on October 24, 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.*