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76
BU Score
Strong

Calculate by QxMD

4.8 ✍️ Editor
✍️ BU Analytics Review

Calculate by QxMD is an iOS app from WebMD in the Education category, currently rated 4.8★ across 5,088 ratings. Initial signal reads as mostly critical sentiment so far — users flag rough edges and unmet expectations.

Our BU Score puts it at 76Strong (healthy traction). For a Education app, that means healthy traction.

Track changes month-over-month in the Performance section below — live snapshot history and revenue forecast included.

creator

📊 Performance Tracking LIVE

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idle
0%
Rating
Reviews
Forecast Revenue / mo
Snapshots tracked
0
since first record
Range:

💰 Forecast Revenue / mo

MODEL
Revenue forecast computed from BU's 234 trigger model on each snapshot. Calibrated against ground-truth from 58 verified-revenue apps.
🔬Forecast Breakdown — Why This Estimate?Top 11 of 11 triggers
Our ML model uses 200+ signals from public data. These are the most influential for this app:
Excellent rating (4.8★)METRIC
+$2,200
bugsREVIEW
−$1,800
5 starREVIEW
+$1,800
great valueREVIEW
+$1,600
excellent appREVIEW
+$1,500
Low install base (5,088 ratings)METRIC
+$1,500
Mature app (16y old)METRIC
+$1,500
highly recommendREVIEW
+$1,400
slowREVIEW
−$1,200
Ad-supported / freemiumMETRIC
+$600
Localized (6 languages)METRIC
+$600
METRIC = structural app data · REVIEW = mined from user reviews · ✓ VERIFIED = Stripe-verified anchor (TrustMRR)

📈 Reviews Growth

LIVE
Cumulative review count from first BU snapshot. Each point = a tracked update.

⭐ Rating Trend

LIVE
Average rating evolution. Updates with each new review batch.

🗓️ Snapshot Timeline

HISTORY
Each bar shows a tracked update and the metric delta from the previous snapshot.
App Specs
🔐 Own this app? Claim & verify MRR →
💾 118 MB🔞 17+📱 iOS 16.0+🔖 v9.5🔄 updated 4mo ago🌐 EN, FR, DE, IT, PT +1📂 Education💰 Paid🚀 Launched 2010 (16y old)

📝 About this app

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.

Profile & Insights

Everything we know — and don't — about this app and its company.

Identification

App name
Calculate by QxMD
Developer
WebMD
Bundle ID
com.qxmd.cardiocalc2
App Store URL
Open in App Store
Category
Education
Content rating
17+
Languages
EN, FR, DE, IT, PT, ES

Company

Website
www.qxmd.com
Tagline
Not found
Description
Not found
Founded
Not found
HQ / Address
Not found
Employees
Not found
Logo
Not found

Revenue

Verified revenue / mo
Not found
AI revenue estimate / mo
Not found
AI annual estimate
Not found
ML model estimate / mo
$19.0K/mo
Top-grossing rank
Outside top 100 in US Education
All-time revenue
Not found
Pricing
Not found

Founder

Name
Not found
X / Twitter
Not found
LinkedIn
Not found
GitHub
Not found
X followers
Not found
Public statements
Not found

Funding

Total raised
Not found
Last round
Not found
Investors
Not found
Crunchbase
Not found
AngelList
Not found

Press & Links

Articles found
Not found
Listed on
Not found
Blog
Not found
Press / News
Not found

Contacts & Socials

Socials
Not found
Email
Not found
Phone
Not found
Contact page
Not found
About page
Not found
📈Ratings growth5,088 ratings+1051% lifetimeShow 3-year history estimate ▾Jun 2015Apr 2021May 2026
Tracked (52 weeks) Pre-tracking estimate (37 weeks) · model-based, ±5% noise · anchored to release date and current value
🌍Geographic ReachNot ranked
This app is currently outside the top 100 grossing in all 9 countries we monitor (US, UK, DE, FR, JP, CA, AU, BR, IN). Niche or new apps often launch this way — popularity rankings appear once daily revenue clears the regional threshold.
Profile is built from iTunes Lookup + developer site scrape + ML revenue model. Empty fields show "Not found" — additional sources (Crunchbase, X, IndieHackers, Acquire.com) coming.
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