# MedCalX vs CMS1600

The clearest difference is review sentiment: CMS1600 at 100% against MedCalX's 46%. CMS1600 also leads on rating (4.5 vs 3.7) and in-app purchases (none vs 3). MedCalX's advantage is ratings volume (30 vs 2). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. MedCalX sells 3 one-off in-app purchases. CMS1600 asks for nothing beyond the download.

CMS1600 holds the better App Store score, 4.5 against 3.7. That said, the two scores are not equally well evidenced: MedCalX has 30 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 46% of MedCalX's written reviews are positive against 100% of CMS1600's.

MedCalX ships an update every 5 months, CMS1600 every 6 months. The most recent releases landed on October 18, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | MedCalX | CMS1600 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.7 (30 ratings)](https://appshunter.io/ios/app/medcalx/id1041464932/reviews) | **[4.5 (2 ratings)](https://appshunter.io/ios/app/cms1600/id1620103169/reviews)** |
| Number of ratings | **30** | 2 |
| Positive reviews | 45.8% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 5 months** | Every 6 months |
| Monetization | Free with in-app purchases | **Free** |
| Size | 45 MB | 7 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [Ossus GmbH](https://appshunter.io/developer/286022405) | [Contec Medical Systems Co., Ltd.](https://appshunter.io/developer/908936493) |

## What reviewers say

### MedCalX

[App page](https://appshunter.io/ios/app/medcalx/id1041464932)

This medical calculator app provides healthcare professionals with a comprehensive tool for complex medical formulas, scores, and classifications. It offers an extensive library of over 300 medical calculations, patient management features, and sharing capabilities.

**Highlights:** Extensive medical formula library (300+), Patient management and data saving, Customizable workflows, Multiple result sharing options, Detailed information and references, US and SI unit support, iCloud synchronization for favorites

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MedCalc 3 Upgrade | Free | one-time |
| Doximity Registration | Free | one-time |
| MedCalX Unlock | $4.99 | one-time |

**What reviewers like**

- 👍 Intuitive and user-friendly interface
- 📱 Comprehensive collection of medical formulas and scores
- 🚀 Fast calculations and quick access
- 📚 Includes PubMed links and background information
- 🌍 Multi-language support

**What reviewers complain about**

- 💰 Paywalls for previously free calculators
- 🔄 Forced paid upgrades for existing users
- ❌ Missing many important medical scores
- ⏱️ Infrequent updates and maintenance
- 🐛 Frequent crashes and stability issues

**Reported bugs**

- App crashes on startup
- App crashes when taking patient photos
- App fails to open or becomes unresponsive
- Unable to restore previous purchases
- Doximity unlock feature not working

**Requested features**

- SCORE2 and other modern cardiovascular risk scores
- TRiP(cast) score
- Valve disease calculations
- Pediatric medication dosing calculators
- Electrolyte and fluid replacement calculations


### 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 MedCalX free?

MedCalX 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, MedCalX or CMS1600?

CMS1600 is rated higher. MedCalX averages 3.7 out of 5 from 30 ratings, while CMS1600 averages 4.5 from 2 ratings.

### Do MedCalX or CMS1600 have ads?

Neither MedCalX nor CMS1600 shows ads.

### Which is updated more often, MedCalX or CMS1600?

MedCalX ships an update every 5 months, and CMS1600 every 6 months. Most recently, MedCalX was updated on October 18, 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.*