# IMAIOS e vs Head

The clearest difference is in-app purchases: Head at none against IMAIOS e's 2. Head also leads on iOS requirement (12.0 vs 16.6). IMAIOS e's advantage is update cadence (every 9 days vs every 33 months) and chart position (#82 vs unranked). On price, ads and device support there is nothing between them.

Both are free to download. IMAIOS e sells 2 in-app purchases, starting at $21.99 per month. Head asks for nothing beyond the download.

IMAIOS e ships an update every 9 days, Head every 33 months. The most recent releases landed on October 22, 2026 and October 17, 2026 respectively.

## The numbers

| Metric | IMAIOS e | Head |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (1.4K ratings)](https://appshunter.io/ios/app/imaios-e-anatomy/id334876403/reviews)** | — |
| Number of ratings | **1.4K** | — |
| Positive reviews | 47.9% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 33 months |
| Monetization | Free with in-app purchases | — |
| Best chart rank | **#82** | — |
| Size | 2.1 GB | 231 MB |
| Requires iOS | 16.6 | **12.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [IMAIOS](https://appshunter.io/developer/334876406) | [Simed Software SL](https://appshunter.io/developer/508339032) |

## What reviewers say

### IMAIOS e

[App page](https://appshunter.io/ios/app/imaios-e-anatomy/id334876403)

**Currently charting:** #82 Top Grossing · Medical (US App Store)

This comprehensive human anatomy atlas offers over 26,000 medical images, including various views and illustrations. It allows users to explore anatomical structures with interactive features and multiple language options. A free preview is available before subscribing to the full, continuously updated atlas.

**Highlights:** 26,000+ medical and anatomical images, Axial, coronal, sagittal views, Radiography and angiography images, Dissection pictures and illustrations, Interactive labeling and search, 12 language options

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| e-Anatomy monthly Subscription | $21.99 | per month |
| e-Anatomy one year Subscription | $132.99 | per year |


### Head

[App page](https://appshunter.io/ios/app/head-us-app/id1438508524)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is IMAIOS e free?

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

### Is Head free?

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

### Do IMAIOS e or Head have ads?

Neither IMAIOS e nor Head shows ads.

### Which is updated more often, IMAIOS e or Head?

IMAIOS e ships an update every 9 days, and Head every 33 months. Most recently, IMAIOS e was updated on October 22, 2026 and Head on October 17, 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.*