# iDO Viewer vs mRay

The clearest difference is rating: iDO Viewer at 4.3 against mRay's 3.8. iDO Viewer also leads on iOS requirement (12.1 vs 15.0). On price, review sentiment, ratings volume and update cadence there is nothing between them.

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

iDO Viewer holds the better App Store score, 4.3 against 3.8. Both are backed by a comparable volume of ratings — 3 and 4 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

iDO Viewer ships an update every 3 months, mRay every 2 months. The most recent releases landed on September 7, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | iDO Viewer | mRay |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (3 ratings)](https://appshunter.io/ios/app/ido-viewer/id494179581/reviews)** | [3.8 (4 ratings)](https://appshunter.io/ios/app/mray/id494895241/reviews) |
| Number of ratings | 3 | **4** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 26 MB | 19 MB |
| Requires iOS | **12.1** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [EBM Technologies, Incorporated.](https://appshunter.io/developer/404511773) | [mbits imaging GmbH](https://appshunter.io/developer/1112070954) |

## What reviewers say

### iDO Viewer

[App page](https://appshunter.io/ios/app/ido-viewer/id494179581)

This application allows medical professionals to view multi-modality medical images and files from PACS servers on their mobile devices. It supports various imaging formats and offers tools for image manipulation and organization.

**Highlights:** Multi-modality imaging support, PACS server integration, Image manipulation (pan, zoom, window level), Support for JPG, BMP, PDF files, Quick layout adjustment, Fast image and data access

**In-app purchases:** none


### mRay

[App page](https://appshunter.io/ios/app/mray/id494895241)

Access and communicate about radiological images from your mobile device. Securely view CT, MR, and other image data, share cases with colleagues via instant messaging or VoIP, and integrate with existing hospital infrastructure.

**Highlights:** Radiological image viewing (CT, MR, PR), Instant messaging and VoIP communication, Secure data encryption (AES-256), Local data storage for offline access, PACS integration, Annotations and measurements

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

**In-app purchases:** none


## Frequently asked questions

### Is iDO Viewer free?

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

### Is mRay free?

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

### Which has better reviews, iDO Viewer or mRay?

iDO Viewer is rated higher. iDO Viewer averages 4.3 out of 5 from 3 ratings, while mRay averages 3.8 from 4 ratings.

### Do iDO Viewer or mRay have ads?

Neither iDO Viewer nor mRay shows ads.

### Which is updated more often, iDO Viewer or mRay?

iDO Viewer ships an update every 3 months, and mRay every 2 months. Most recently, iDO Viewer was updated on September 7, 2026 and mRay on September 8, 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.*