# MedCalX — The Medical Calculator

> Medical calculator for complex formulas, scores, and classifications. (iPhone/iPad app by Ossus GmbH.)

- Source: https://appshunter.io/ios/app/medcalx/id1041464932 (this page in markdown: same URL + `.md`)
- Developer: [Ossus GmbH](https://appshunter.io/developer/286022405)
- Category: Medical, Health & Fitness
- Price: Free with in-app purchases
- Rating: 3.70/5 from 30 App Store ratings · 118 written reviews indexed
- Age rating: 17+
- Requires: iOS 16.0 · 43 MB
- Languages: American English, French (France), German (Germany), European Portuguese, Chinese (Simplified, China), European Spanish
- Released: 2015-11-10
- Data updated: 2026-08-30
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/medcalx/id1041464932/reviews.md

## What is MedCalX?

MedCalX is a tool that enables medical professionals to easily use complicated medical formulas, scores and classifications.
25 years of experience developing this tool for mobile platforms makes MedCalX the leading medical calculator, with an unparalleled user interface and powerful features.

MedCalX is free to download and use, but you have access only to a subset of formulas.
In-app purchase lets you unlock the whole range of formulas that MedCalX has to offer; more than 300 in total!

Main features:
• A very large selection (more than 300) of relevant formulas, scores, scales and classifications.
• Workflows: create your own series of formulas, text, links and images
• Many different ways to share results (and data): copy to clipboard, email report, print via AirPrint, save to patient database...
• Exclusive patient management feature for saving and accessing results, as well as images and notes. Results can be exported to the desktop as CSV files and shared between your and your colleaugues iOS devices.
• Detailed information and bibliographic references for each formula.
• Support for US and SI units, with easy switching from the keypad.
• Search for entries by name, keywords and categories.
• Takes advantage of iOS 9 – you can now use Spotlight to search for formulas
• Customizable list of favorite equations, synchronized via iCloud.
• Ability to add notes to individual formulas.
• Full support for external (hardware) keyboards

Formulas, scores and classifications include, amongst others:
• Anesthesiology (ASA, Bromage, Charlson, Cormack, Dermatome, Goldman)
• Cardiology (CC/AHA ASCVD, CHADS, EuroSCORE, GRACE, HAS-BLED, Killip, PROCAM, QT-c, TIMI)
• Electrolytes (Corrected Ca, Corrected Na, FENa, Osmolal gap)
• Evidence-Based Medicine (NNT, Odds, Sample size, Two-way table)
• ICU (ABCD2+3, APACHE, CAM-ICU, GCS, Parkland, SAPS, many PE-criteria and trauma scores)
• Neurology (AMTS, Aphasia, Canadian rules, NIHSS, WFNS)
• Obstetrics (APGAR, Bishop, Malinas, Pregnancy Wheel)
• Pediatrics (Age, Target Height, Centor and McIsaac, PRAM, WETFAG)
• Respiratory (BODE, Epworth, GOLD, SMART-COP, Spirometry, Thoracoscore)
• Renal (Cockcroft, MDRD and more Creatinine/GFR calculators, KDIGO and RIFLE)
• ABG analyzer worth $5 in other apps
• Complete infusion management tool, great for ICU nurses
• Complicated scores (CAM-ICU, CDAI, APACHE, POSSUM, SAPS, Euroscore)

If you like MedCalX, we’d appreciate it if you took the time to give us a nice review.

## Key features

- 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

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

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


## What do users think of MedCalX?

Overall sentiment: mixed

**Pros**

- 👍 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
- 💾 Patient data storage and comparison features
- 📊 Essential for daily clinical practice
- ✅ Regular updates with new formulas
- 🎯 Well-organized and easy to navigate

**Cons**

- 💰 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
- 🚫 Features removed in newer versions
- 😤 Poor customer support responsiveness
- 🔐 Difficulty transferring purchases between devices
- 📉 Declining functionality over time
- 🎭 Deceptive upgrade practices

**Commonly 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
- Spotlight search functionality broken
- NIH scale interface poorly designed
- Parameter value limits prevent calculations for severe patients
- Data migration issues between app versions
- Preferences not carried over during upgrades

**Most requested features**

- SCORE2 and other modern cardiovascular risk scores
- TRiP(cast) score
- Valve disease calculations
- Pediatric medication dosing calculators
- Electrolyte and fluid replacement calculations
- ICU-specific calculations and AHI calculation
- GUPTA, AWOL, and CAM traditional scores
- Dermatology scales and classifications
- RESP and PRESET scores
- Psychological assessment scores (depression, alcoholism ratings)
- Gail model and cancer risk calculations
- Pediatric weight percentiles by age
- Custom formula creation
- Unit conversion tool
- Personal formula addition feature
- Forrester classification
- MMSE and other copyrighted scales

## Recent user reviews (10 of 118)

All indexed reviews: https://appshunter.io/ios/app/medcalx/id1041464932/reviews.md

### 3/5 — Atualização

*2026-06-23*

Precisa atualizar as fórmulas. MELD MELDNA MELD 3.0, acrescentar a CLIF

### 5/5 — A great tool!

*2026-06-05*

A GREAT pocket reference I've used daily for years but just now getting around to writing a review.

### 1/5 — Previously free calculators now require subscription

*2026-01-02*

I have used this app for years. However, the ascvd risk calculator, which use to be free, now requires a premium account. This calculator is free in so many other apps. Will delete this app and use an alternative. I understand an app needs to make money, but provide an option with ads versus abruptly cutting off busy providers in the midst of their clinic without a heads up.

### 3/5 — Language

*2025-05-19*

can't change the language

**Developer response:** You should be able to change the language when you go to the Settings App » Apps » MedCalX to one of our 6 supported languages.

### 2/5 — MALA ACTUALIZACIÓN

*2024-10-10, version 3.4*

NO SE ACTUALIZA DESDE HACE MUCHO

### 4/5 — Mise à jour

*2024-06-24*

Bonjour
Bonne appli, fonctionnelle et intuitive. 
Pourriez vous ajouter le score TRiP(cast) ?

Merci

### 4/5 — Bitte neue Scores

*2024-06-19*

Super App, aber viele neue Scores z.B SCORE2 fehlen. Außerdem wären es schön Klappenvitien berechnen zu können.

### 3/5 — Problema com o app

*2023-09-20*

Uso o app há mais de 1 ano, porém essa semana ele iníciou com problemas. O aplicativo não abre mais. Gostaria de saber o que está acontecendo

### 4/5 — Manque certaines formule, sans mise à jour depuis longtemps

*2023-09-01*

Certaine scores assez classique sont manquant.
Il semblerait que la base de données ne soit pas souvent mise a jour ?
Sinon l’utilisation est intuitive et simple.

### 4/5 — Muito útil!

*2023-08-18*

Muito útil! Porém, deveria ter disponível calculadores de doses de DVA, medicações comuns da pediatria e cálculos de reposição de eletrólitos/soro de manutenção adultos e pediátricos.

## Frequently asked questions about MedCalX

### What does MedCalX do?

MedCalX is a medical calculator designed for healthcare professionals. It provides easy access to a vast collection of complex medical formulas, scores, and classifications, helping users perform calculations quickly and accurately.

### What are the main features of MedCalX?

Key features include a library of over 300 medical formulas, patient management for saving results and notes, customizable workflows, multiple sharing options for results, and support for both US and SI units. It also offers detailed information and bibliographic references for each formula.

### How much does MedCalX cost?

MedCalX is free to download and use, offering a subset of formulas. Users can unlock the full range of over 300 formulas through an in-app purchase.

### What medical specialties does MedCalX cover?

The app covers a wide range of medical specialties, including Anesthesiology, Cardiology, ICU, Neurology, Obstetrics, Pediatrics, Respiratory, and Renal. It includes specific scores and classifications relevant to each field.

### Can I share my calculations with colleagues?

Yes, MedCalX offers several ways to share results, including copying to the clipboard, emailing reports, and saving to a patient database. Results can also be exported to desktop as CSV files and shared between iOS devices of colleagues.

## Version history (last 5 releases)

### 3.5.2 — 2025-11-06

• Improvements to support iOS 26
• Remembers purchases better
• Fix full screen image view in workflows & Snellen
• Smaller fixes & improvements

### 3.5.1 — 2025-05-14

• Improvements & fixes to the In-App purchase flow
• Minor updates to several formulas
• Other improvements & fixes

### 3.5 — 2025-02-18

• Improvements & fixes to the In-App purchase flow
• Minor updates to several formulas
• Other improvements & fixes

### 3.4 — 2019-10-04

• Dark Mode support
• Other fixes and improvements

### 3.3.3 — 2018-12-05

• Add mEq/L for Calcium
• Other fixes and improvements for iOS 12
• Fix for FaceID to unlock the patient database

New in 3.3:
• Search now also includes calculators available online
• Greatly enhanced info pages for select formulas, courtesy of L. Lanthier
• Fixes and improvements throughout

## Apps similar to MedCalX

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| [MediCalc®](https://appshunter.io/ios/app/medicalc/id573214169) | 4.5 (21) | Free | Medical |
| [iDoctus](https://appshunter.io/ios/app/idoctus/id530457100) | 4.6 (24) | Free | Medical |
| [CardioCal](https://appshunter.io/ios/app/cardiocal/id918099010) | 3.7 (3) | Free | Medical |
| [Lanthier](https://appshunter.io/ios/app/lanthier/id701664895) | 3.8 (5) | Free | Medical |
| [Calculate by QxMD](https://appshunter.io/ios/app/calculate-by-qxmd/id361811483) | 4.8 (5,100) | Free | Medical |
| [MDCalc Medical Calculator](https://appshunter.io/ios/app/mdcalc-medical-calculator/id1001640662) | 4.9 (51,857) | Free | Medical |

## More apps by Ossus GmbH

- [Eponyms](https://appshunter.io/ios/app/eponyms/id286022402)
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All apps by Ossus GmbH: https://appshunter.io/developer/286022405

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-30.*