---
title: "Calculate by QxMD - Reviews, Revenue and Downloads in United States | Apple App Store"
description: "From the developer of 'Read by QxMD', 'The ECG Guide' and 'Pedi STAT' comes 'Calculate', a next-generation clinical calculator and decision support tool, freely available to the medical community.  "W"
---

# Calculate by QxMD — United States
> Medical Calculator

![Calculate by QxMD App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple211/v4/07/3e/54/073e547b-dbf4-8564-fa67-1798c374310c/AppIcon-0-0-1x_U007emarketing-0-11-0-85-220.png/434x0w.png)

**Developer:** [WebMD Health](https://apptail.io/developer/webmd-health-N) (United States)
**Category:** Medical
**Rating:** 4.8/5 (5,085 ratings)
**Price:** Free
**Bundle ID:** com.qxmd.cardiocalc2
**Store:** Apple App Store
**Country:** United States
**Version:** 9.5 (released 2025-12-19)
**Original Release:** 2010-03-20
**Languages:** Portuguese, German, Spanish, French, English, Italian

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id361811483)
**AppTail Page:** [https://apptail.io/app/calculate-by-qxmd-Mipb/united-states](https://apptail.io/app/calculate-by-qxmd-Mipb/united-states)

## Calculate by QxMD Description
From the developer of 'Read by QxMD', 'The ECG Guide' and 'Pedi STAT' comes 'Calculate', a next-generation clinical calculator and decision support tool, freely available to the medical community.

"We recommend medical users try the free Calculate by QxMD first..."
-from iMedicalApps review "The best free Medical Calculator apps for the iPhone"

'Calculate' highlights tools which impact clinical practice either by simplifying diagnosis, clarifying treatment options or displaying prognosis.

Helping you make decisions, not just calculate numbers...

Features

• Developed by a collaboration of clinician experts from diverse backgrounds
• Point-of-care tools in the areas of cardiology, internal medicine, primary care, nephrology, hematology, hepatology, gastroenterology, emergency medicine, oncology, orthopedics, critical care/ICU, ENT, radiology, rheumatology, mental health, respirology, neurology, pediatrics, infectious disease, neurosurgery, general surgery, vascular surgery, and obstetrics.
• Converts recent research publications into practical handheld tools - knowledge translation at its best 
• Automatically adapts to your clinical practice
• Unique ‘Question Flow’ technology gets you answers, fast
• Detailed references with PubMed & Read integration
• Comprehensive and insightful results
• Elegant design and intuitive interface
• SI and Imperial units

More than 200 unique calculators and decision support tools

While too extensive to list them all, here is a small sampling of included content:

Guide treatment

• Determine cardiovascular risk using ACC/AHA, Framingham, Gupta and VQI Cardiac Risk Index
• CHADS2 & CHA2DS2-VASc to guide treatment in atrial fibrillation
• Understand bleeding risk in atrial fibrillation using HAS-BLED & OBRI
• TIMI risk score in ACS
• CIWA in alcohol withdrawal
• Rule of 9s & Parkland formula in burns
• Water deficit in hypernatremia 
• Timing of surgery with Aortic Stenosis Risk Score
• Risk stratify pneumonia (CURB-65, PORT)
• NIH Stroke Scale in acute stroke
• Imaging in possible subarachnoid hemorrhage with Ottawa SAH Rule

Determine Prognosis

• Cirrhosis (MELD, Child-Pugh)
• Chronic Kidney Disease (Kidney Failure Risk Equation)
• Heart failure
• Lymphoma (NCCN-IPI, IPI24, R-IPI)
• Myelodysplastic Syndrome (IPSS-R, WPSS)
• Myeloma (ISS, R-ISS)
• Hemodialysis
• COPD (Bode)
• Pancreatitis (BISAP, Ranson's)
• Cardiac surgery (Euroscore II, Cleveland Clinic, Mehta)
• Critical care (APACHE II, SOFA)
• Neurologic outcome (DRAGON, CAM-ICU, modified Rankin, FOUR score, Hunt & Hess)

Calculate

• Ideal body weight, BMI and BSA
• Due date and gestational age
• Extensive formula used in echocardiography and invasive hemodynamic monitoring
• Kt/V in dialysis patients
• eGFR with CKD-EPI, MDRD & Schwartz
• A-a gradient

Classify

• Angina (CCS)
• Congestive heart failure (NYHA)

Screen

• Diabetes
• Breast cancer

Reduce and predict perioperative complications

• WHO Surgical Safety Checklist
• Predictive models for cardiac surgery, vascular surgery and coronary angiography
• Postoperative Respiratory Failure Risk score

Manage

• Head, neck, ankle and knee injuries (NEXUS, Ottawa ankle/knee, Canadian C-spine and CT head rules)
• DVT and PE (PERC, Wells, PESI)
• Pulmonary nodules
• TIA (ABCD2)

Stage

• Lung cancer
• Renal cell carcinoma
• Head & neck cancers

Understand

• TTKG in hypokalemia and hyperkalemia
• Dermatomes

Diagnose

• Heparin Induced Thrombocytopenia
• Infective Endocarditis
• ARDS
• Autoimmune Hepatitis
• Sleep disorder (Epworth Sleepiness Scale)

And much, much more...

Researchers, contact us to see your research in our app at contact@qxmd.com

Founded my medical professionals, QxMD Software is dedicated to creating high quality, point-of-care tools for practicing health care professionals. Recognized as a leading developer of free medical software for mobile devices, QxMD develops content in cooperation with expert physicians from their respective fields.

## Calculate by QxMD Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/Purple113/v4/d7/a2/44/d7a244ca-3291-0fb7-8101-e407718eece5/pr_source.png/1242x2688.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/Purple113/v4/c4/f6/cc/c4f6cc10-a549-8c5d-ce3b-2345fa7baacb/pr_source.png/1242x2688.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/Purple113/v4/be/69/fa/be69fa5d-5a5c-b550-1c74-beef5bb75363/pr_source.png/1242x2688.png)
- [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/Purple123/v4/09/7c/a2/097ca213-d6e5-3ecd-404c-331710418b46/pr_source.png/1242x2688.png)
- [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/Purple123/v4/aa/ae/6b/aaae6b2a-ee4b-6c1c-4fb6-63653903a354/pr_source.png/1242x2688.png)

## Calculate by QxMD Rating Breakdown in United States
- 5 stars: 4,370 (86%)
- 4 stars: 512 (10%)
- 3 stars: 110 (2%)
- 2 stars: 31 (1%)
- 1 stars: 62 (1%)

## Calculate by QxMD Reviews in United States

### ***-- "Only one calc at a time"
Great resource, but app freezes if you use the app for more than one calculator. Get out of the app between each calculation.
-- kidneybeansaz, 2024-04-15

### **--- "Fix this please!!!!!"
Will not allow you to add anything to the favorite list.
-- Djdjsosk, 2024-03-19

### *---- "Not great"
Results are not able to be seen after filling out the forms. I have tried different forms with the same result. Even while typing the review, I cannot see what I am typing. I
-- Zach1630, 2023-10-12

### *---- "Excellent until now"
I have a long list of favorites. However, now, something is wrong, “bugs” the app freezes at the end of questions. It happens on all the decisions trees.
-- ubaomoin, 2023-08-17

### *---- "Bugs!"
App freezes just when a questionnaire has been completed
-- arrowsfan, 2023-07-02

### *---- "Scam"
I have no recollection of signing up. But they are spamming my email. I tried downloading the app to delete the subscription and account since that’s the instructions I found online. However, I am unable to do either. I found a privacy email and it send me a message saying the person no longer worked for them. Absolutely ridiculous
-- carol1n, 2022-03-30

### ***** "Dr.Sam Vaughn"
Excellent
-- aviansam, 2021-04-04

### ****- "Love it so far"
Loving it so far. I would like to request a drug compliance calculator. And maybe a research nurse specialty. We have to use whatever calculator our sponsor wants us to for our studies which makes this app super useful.
-- Soli yoga, 2021-02-09

### ****- "Calculations"
Looks interesting but need more time to evaluate.
-- whateverdoc, 2020-08-03

### ****- "Great app could be even greater if..."
This could  be a money maker for the developers if they gave the option for putting a name and date and top and then the ability to print so we can put it in EHR or even better integrate with the ehr and send the results to the ehr. Providers are now getting paid by insurance for administering scales but they must be documented in the chart. I would pay (to a. Retain price point of course) to see that happen. I recently emailed you saying something similar. I have notable experiences as a user interface tester for an ehr and can provide assistance if you need a consultant a few hours a month. -DanielleZ
-- dmar82, 2018-08-26

### ***** "Great App"
I very much enjoy this app
One of my go tos on the job
-- UzoAlmighty, 2018-06-15

### *---- "Crashes"
Crashes constantly
-- Al4562, 2018-05-14

### *---- "Translate"
Better if Spanish option
-- 8br90f, 2018-04-12

### ***** "Great App for students"
Easy to use and comes in handy on rotations!
-- YourReview guy, 2017-09-29

### ***** "Don't waste you're time"
Absolutely worst support I have ever experienced. App will not update and most calls won't function. Emailed them and no one ever responded. Don't waste your time.
-- NP Tom, 2017-09-22

### ***** "Easy to navigate"
I like it! If I would change one thing, I'd make it easier to clear current inputs and start over, especially for trending labs ovee
Time.
-- tbrain10, 2017-09-08

### ***** "The best iPhone Med !"
The best iPhone Med calc I have used so far, maybe just add a save function so you can look back at previous scores
-- Alvarotamayo, 2017-08-07

### ***** "Good application"
Practical supportive and gives u all needed tools for medical practice.
-- Ehabsci, 2017-06-23

### ***** "Good"
!
-- Chazilla, 2017-06-10

### ***** "Great app"
Highly recommend it great interface provides references and ranges with links to original literature related to certain score.
-- Bns3, 2017-05-28

[View all Calculate by QxMD reviews and detailed analytics on AppTail](https://apptail.io/account/signup?utm_campaign=ai-crawl&utm_content=reviews)


## Calculate by QxMD Store Rankings
| Chart | Country | Category | Rank |
|-------|---------|----------|------|
| Top Free | Ecuador | Medical | #72 |
| Top Free | Philippines | Medical | #102 |
| Top Free | Mexico | Medical | #102 |
| Top Free | Norway | Medical | #104 |
| Top Free | Dominican Republic | Medical | #191 |
| Top Free | Colombia | Medical | #217 |
| Top Free | Peru | Medical | #235 |
| Top Free | Kuwait | Medical | #239 |
| Top Free | Lebanon | Medical | #252 |
| Top Free | Nigeria | Medical | #274 |
| Top Free | Vietnam | Medical | #277 |
| Top Free | Algeria | Medical | #331 |
| Top Free | Indonesia | Medical | #331 |
| Top Free | Azerbaijan | Medical | #362 |
| Top Free | Sweden | Medical | #366 |
| Top Free | Greece | Medical | #391 |
| Top Free | New Zealand | Medical | #394 |
| Top Free | South Korea | Medical | #462 |
| Top Free | Hungary | Medical | #465 |
| Top Free | Malaysia | Medical | #467 |
| Top Free | Finland | Medical | #486 |

## Calculate by QxMD Discovered Keywords
- gas calculator
- gas log
- med calc
- bsa calculator
- medicalc
- calculate
- wellness webmd
- webmd health services
- the melding
- md-app

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## Calculate by QxMD Available In
- [United States](https://apptail.io/app/calculate-by-qxmd-Mipb/united-states)
- [Mexico](https://apptail.io/app/calculate-by-qxmd-Mipb/mexico)
- [Colombia](https://apptail.io/app/calculate-by-qxmd-Mipb/colombia)
- [Brazil](https://apptail.io/app/calculate-by-qxmd-Mipb/brazil)
- [Argentina](https://apptail.io/app/calculate-by-qxmd-Mipb/argentina)
- [Philippines](https://apptail.io/app/calculate-by-qxmd-Mipb/philippines)
- [Canada](https://apptail.io/app/calculate-by-qxmd-Mipb/canada)
- [Indonesia](https://apptail.io/app/calculate-by-qxmd-Mipb/indonesia)
- [Italy](https://apptail.io/app/calculate-by-qxmd-Mipb/italy)
- [Ecuador](https://apptail.io/app/calculate-by-qxmd-Mipb/ecuador)
- [Vietnam](https://apptail.io/app/calculate-by-qxmd-Mipb/vietnam)
- [India](https://apptail.io/app/calculate-by-qxmd-Mipb/india)
- [Spain](https://apptail.io/app/calculate-by-qxmd-Mipb/spain)
- [Peru](https://apptail.io/app/calculate-by-qxmd-Mipb/peru)
- [United Kingdom](https://apptail.io/app/calculate-by-qxmd-Mipb/united-kingdom)
- [Türkiye](https://apptail.io/app/calculate-by-qxmd-Mipb/turkey)
- [Malaysia](https://apptail.io/app/calculate-by-qxmd-Mipb/malaysia)
- [Chile](https://apptail.io/app/calculate-by-qxmd-Mipb/chile)
- [Saudi Arabia](https://apptail.io/app/calculate-by-qxmd-Mipb/saudi-arabia)
- [Germany](https://apptail.io/app/calculate-by-qxmd-Mipb/germany)
- [China](https://apptail.io/app/calculate-by-qxmd-Mipb/china)
- [Australia](https://apptail.io/app/calculate-by-qxmd-Mipb/australia)
- [Portugal](https://apptail.io/app/calculate-by-qxmd-Mipb/portugal)
- [South Africa](https://apptail.io/app/calculate-by-qxmd-Mipb/south-africa)
- [Thailand](https://apptail.io/app/calculate-by-qxmd-Mipb/thailand)
- [Panama](https://apptail.io/app/calculate-by-qxmd-Mipb/panama)
- [France](https://apptail.io/app/calculate-by-qxmd-Mipb/france)
- [Japan](https://apptail.io/app/calculate-by-qxmd-Mipb/japan)
- [Dominican Republic](https://apptail.io/app/calculate-by-qxmd-Mipb/dominican-republic)
- [Greece](https://apptail.io/app/calculate-by-qxmd-Mipb/greece)
- [Romania](https://apptail.io/app/calculate-by-qxmd-Mipb/romania)
- [Taiwan](https://apptail.io/app/calculate-by-qxmd-Mipb/taiwan)
- [South Korea](https://apptail.io/app/calculate-by-qxmd-Mipb/south-korea)
- [Egypt](https://apptail.io/app/calculate-by-qxmd-Mipb/egypt)
- [Poland](https://apptail.io/app/calculate-by-qxmd-Mipb/poland)
- [Singapore](https://apptail.io/app/calculate-by-qxmd-Mipb/singapore)
- [New Zealand](https://apptail.io/app/calculate-by-qxmd-Mipb/new-zealand)
- [United Arab Emirates](https://apptail.io/app/calculate-by-qxmd-Mipb/united-arab-emirates)
- [Pakistan](https://apptail.io/app/calculate-by-qxmd-Mipb/pakistan)
- [Netherlands](https://apptail.io/app/calculate-by-qxmd-Mipb/netherlands)
- [Belgium](https://apptail.io/app/calculate-by-qxmd-Mipb/belgium)
- [Kuwait](https://apptail.io/app/calculate-by-qxmd-Mipb/kuwait)
- [Switzerland](https://apptail.io/app/calculate-by-qxmd-Mipb/switzerland)
- [Israel](https://apptail.io/app/calculate-by-qxmd-Mipb/israel)
- [Ireland](https://apptail.io/app/calculate-by-qxmd-Mipb/ireland)
- [Hong Kong SAR China](https://apptail.io/app/calculate-by-qxmd-Mipb/hong-kong)
- [Kazakhstan](https://apptail.io/app/calculate-by-qxmd-Mipb/kazakhstan)
- [Ukraine](https://apptail.io/app/calculate-by-qxmd-Mipb/ukraine)
- [Austria](https://apptail.io/app/calculate-by-qxmd-Mipb/austria)
- [Nigeria](https://apptail.io/app/calculate-by-qxmd-Mipb/nigeria)
- [Sri Lanka](https://apptail.io/app/calculate-by-qxmd-Mipb/sri-lanka)
- [Hungary](https://apptail.io/app/calculate-by-qxmd-Mipb/hungary)
- [Norway](https://apptail.io/app/calculate-by-qxmd-Mipb/norway)
- [Lithuania](https://apptail.io/app/calculate-by-qxmd-Mipb/lithuania)
- [Croatia](https://apptail.io/app/calculate-by-qxmd-Mipb/croatia)
- [Czechia](https://apptail.io/app/calculate-by-qxmd-Mipb/czechia)
- [Qatar](https://apptail.io/app/calculate-by-qxmd-Mipb/qatar)
- [Bulgaria](https://apptail.io/app/calculate-by-qxmd-Mipb/bulgaria)
- [Denmark](https://apptail.io/app/calculate-by-qxmd-Mipb/denmark)
- [Sweden](https://apptail.io/app/calculate-by-qxmd-Mipb/sweden)
- [Algeria](https://apptail.io/app/calculate-by-qxmd-Mipb/algeria)
- [Lebanon](https://apptail.io/app/calculate-by-qxmd-Mipb/lebanon)
- [Bahrain](https://apptail.io/app/calculate-by-qxmd-Mipb/bahrain)
- [Slovenia](https://apptail.io/app/calculate-by-qxmd-Mipb/slovenia)
- [Nepal](https://apptail.io/app/calculate-by-qxmd-Mipb/nepal)
- [Finland](https://apptail.io/app/calculate-by-qxmd-Mipb/finland)
- [Armenia](https://apptail.io/app/calculate-by-qxmd-Mipb/armenia)
- [Cyprus](https://apptail.io/app/calculate-by-qxmd-Mipb/cyprus)
- [Jamaica](https://apptail.io/app/calculate-by-qxmd-Mipb/jamaica)
- [Latvia](https://apptail.io/app/calculate-by-qxmd-Mipb/latvia)
- [Slovakia](https://apptail.io/app/calculate-by-qxmd-Mipb/slovakia)
- [Azerbaijan](https://apptail.io/app/calculate-by-qxmd-Mipb/azerbaijan)
- [North Macedonia](https://apptail.io/app/calculate-by-qxmd-Mipb/north-macedonia)
- [Malta](https://apptail.io/app/calculate-by-qxmd-Mipb/malta)
- [Mauritius](https://apptail.io/app/calculate-by-qxmd-Mipb/mauritius)
- [Cayman Islands](https://apptail.io/app/calculate-by-qxmd-Mipb/cayman-islands)
- [Tunisia](https://apptail.io/app/calculate-by-qxmd-Mipb/tunisia)
- [Uzbekistan](https://apptail.io/app/calculate-by-qxmd-Mipb/uzbekistan)
- [Belize](https://apptail.io/app/calculate-by-qxmd-Mipb/belize)
- [Luxembourg](https://apptail.io/app/calculate-by-qxmd-Mipb/luxembourg)
- [Iceland](https://apptail.io/app/calculate-by-qxmd-Mipb/iceland)
- [Estonia](https://apptail.io/app/calculate-by-qxmd-Mipb/estonia)
- [Madagascar](https://apptail.io/app/calculate-by-qxmd-Mipb/madagascar)

---

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