# IMAIOS e vs CMS1600

The clearest difference is review sentiment: CMS1600 at 100% against IMAIOS e's 48%. CMS1600 also leads on in-app purchases (none vs 2). IMAIOS e's advantage is update cadence (every 9 days vs every 6 months) and rating (4.9 vs 4.5). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. IMAIOS e sells 2 in-app purchases, starting at $21.99 per month. CMS1600 asks for nothing beyond the download.

IMAIOS e holds the better App Store score, 4.9 against 4.5. That said, the two scores are not equally well evidenced: IMAIOS e has 1.4K ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 48% of IMAIOS e's written reviews are positive against 100% of CMS1600's, so the app with the better star average is not the one people write more warmly about.

IMAIOS e ships an update every 9 days, CMS1600 every 6 months. The most recent releases landed on October 16, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | IMAIOS e | CMS1600 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (1.4K ratings)](https://appshunter.io/ios/app/imaios-e-anatomy/id334876403/reviews)** | [4.5 (2 ratings)](https://appshunter.io/ios/app/cms1600/id1620103169/reviews) |
| Number of ratings | **1.4K** | 2 |
| Positive reviews | 47.9% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 6 months |
| Monetization | Free with in-app purchases | **Free** |
| Best chart rank | **#93** | — |
| Size | 2.1 GB | 7 MB |
| Requires iOS | 16.6 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [IMAIOS](https://appshunter.io/developer/334876406) | [Contec Medical Systems Co., Ltd.](https://appshunter.io/developer/908936493) |

## What reviewers say

### IMAIOS e

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

**Currently charting:** #93 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 |


### CMS1600

[App page](https://appshunter.io/ios/app/cms1600/id1620103169)

This advanced wireless ultrasound imaging system provides real-time, clear color ultrasound images across multiple work modes. It supports a wide range of examinations and includes powerful image processing and patient management features. Connect wirelessly for greater freedom of use.

**Highlights:** Multiple work modes (B, CDFI, M, PW), Supports various examinations (abdominal, OB/GYN, vascular, cardiac), Powerful image processing and optimization, Image and video annotation, saving, and DICOM storage, Patient management system, Wireless WiFi connectivity

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

**In-app purchases:** none


## Frequently asked questions

### Is IMAIOS e free?

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

### Is CMS1600 free?

CMS1600 is free to download, with no in-app purchases.

### Which has better reviews, IMAIOS e or CMS1600?

IMAIOS e is rated higher. IMAIOS e averages 4.9 out of 5 from 1.4K ratings, while CMS1600 averages 4.5 from 2 ratings.

### Do IMAIOS e or CMS1600 have ads?

Neither IMAIOS e nor CMS1600 shows ads.

### Which is updated more often, IMAIOS e or CMS1600?

IMAIOS e ships an update every 9 days, and CMS1600 every 6 months. Most recently, IMAIOS e was updated on October 16, 2026 and CMS1600 on October 2, 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.*