Calculate by QxMD Downloads & RevenueCalculate by QxMD · App Store & Google Play
Calculate by QxMD by WebMD is on App Store and Google Play. Active Users (MAU & DAU), Downloads, rankings, keywords, revenue, and rating totals.
🆕AndroidFirst spotted by AppInsider⭐iOSPassed 1K ratings📈iOSCharting in a new country📈iOSCharting in a new country🆕iOSFirst spotted by AppInsider📦iOSVersion 9.5🆕iOSReleased on the App Store
Full timeline · 7 events
- 🆕Calculate by QxMD first spotted by AppInsiderAndroidMexico
- 📈Calculate by QxMD charting in a new countryiOSItaly
- 📈Calculate by QxMD charting in a new countryiOSUnited Arab Emirates
- 🆕Calculate by QxMD first spotted by AppInsideriOS#38 in Top Free · Medical · Indonesia
- 📦Calculate by QxMD version 9.5iOSBug Fixes
- 🆕Calculate by QxMD released on the App StoreiOS
Collected from the stores by AppInsider since we first spotted the app. Dates are when we saw each change.
Rating
4.9 ★
583 ratings, both stores
Measured
Best rank now
#101
Android · 
Medical Free
Medical FreeMeasured
App Store
App details
App ID
361811483
Publisher
WebMD Health Corporation
On the store since
Mar 2010
16 years on the store
Minimum OS
iOS 16.0+
iPhone 8 and later
Devices
iPhone · iPad
Universal purchase
Content rating
17+
1 content note below
Languages
6
EN FR DE IT PT ES
Size
124 MB
Content notesFrequent/Intense Medical/Treatment Information
Google Play
App details
App ID
com.qxmd.calculate
Publisher
QxMD Medical Software Inc.
Calculate by QxMD downloads & installs
Both stores, worldwide. Bands are open; exact numbers are free with an account.
| Store | Downloads / day | Lifetime installs |
|---|---|---|
| App Store | – | 1M+ |
| Google Play | – | – |
| Total | – | 1M+ Confidence |
How this is calculated
App Store: chart positions and rating growth per country, anchored on its own Android downloads; lifetime from ratings worldwide × installs per rating. Google Play: the daily change in its exact install count. The total adds every store.
Where it ranks now
Both stores, across every country we track.
| Store | Best rank | Charting in | US Top Free | US Top Grossing |
|---|---|---|---|---|
| App Store | #102 Medical Free | 1 of 30 countries | – | – |
| Google Play | #101 Medical Free | 1 of 23 countries | – | – |
Full chart lists: App Store · Google Play.
Review momentum
ⓘ How we measure thisNew ratings a week
under 1
4-week average
Lifetime rating
4.8★
recent stars not readable yet: new ratings are a tiny share of the total
Review momentum
56/100
faster than 60% of Medical apps
Review momentum (0-100) blends how fast the app collects ratings compared with other apps in its category (60%), whether that pace is speeding up (25%) and what recent raters give it (15%; recent stars well below lifetime pull it down). Ratings counts are read daily. A jump usually means a launch, a feature, ads or a new review prompt.
Ratings
Both stores. Store data, measured.
| Store | Rating | Ratings |
|---|---|---|
| App Store | 4.9 ★ | 583 |
| Google Play | 4.5 ★ | – |
| Both stores | 4.9 ★ weighted by ratings | 583 |
About Calculate by QxMD
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 ca
"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 ca
Calculate by QxMD App Store
Calculate by QxMD is #102 in Medical Free in Indonesia and charting in 1 of 30 countries we track.
Updated 8 Nov 2026 · rankings refresh through the day
DeveloperWebMD
CategoryMedical
PriceFree
Released
Rating★ 4.9 (583)
Version9.5
Age rating17+
First seen by us 2 Oct 2026
2 Oct 2026Installs (est.)1M+ worldwide
Rating
4.9 ★
583 ratings
Measured
Best rank now
#102
Medical FreeMeasured
Calculate by QxMD on the App Store
App details
App ID
361811483
Publisher
WebMD Health Corporation
On the store since
Mar 2010
16 years on the store
Minimum OS
iOS 16.0+
iPhone 8 and later
Devices
iPhone · iPad
Universal purchase
Content rating
17+
1 content note below
Languages
6
EN FR DE IT PT ES
Size
124 MB
Content notesFrequent/Intense Medical/Treatment Information
Calculate by QxMD downloads
Worldwide, per day, and installs to date. The band is open; the exact number is free with an account.
How this is calculated
Apple publishes no download counts. App Store downloads come from chart positions and daily rating growth per country, calibrated on Google Play install counts; lifetime installs from ratings worldwide × installs per rating. Confidence is the chance the real number is within half to double ours.
Where it ranks now
Every top chart it appears in across 30 countries.
| Country | Charts | Rank |
|---|---|---|
| Indonesia | MedicalFree | #102 |
Apps near Calculate by QxMD on the chart
Medical Free, around #102.
Ratings
App Store, worldwide.
Rating
4.9 ★
583 ratings
Measured
Ratings
583
Measured
Review momentum
ⓘ How we measure thisNew ratings a week
under 1
4-week average
Lifetime rating
4.8★
recent stars not readable yet: new ratings are a tiny share of the total
Review momentum
56/100
faster than 60% of Medical apps
Review momentum (0-100) blends how fast the app collects ratings compared with other apps in its category (60%), whether that pace is speeding up (25%) and what recent raters give it (15%; recent stars well below lifetime pull it down). Ratings counts are read daily. A jump usually means a launch, a feature, ads or a new review prompt.
About Calculate by QxMD
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 ca
"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 ca
Latest updates
9.5
Bug Fixes
More from WebMD
Calculate by QxMD Android
Calculate by QxMD is #101 in Medical Free on Google Play in Mexico and charting in 1 of 23 countries we track.
Updated 8 Nov 2026 · rankings refresh through the day
DeveloperQxMD Medical Software Inc.
Category–
PriceFree
Released–
Installs–
Rating★ 4.5 (0)
Updated–
Content rating–
Rating
4.5 ★
0 ratings
Measured
Best rank now
#101
Medical FreeMeasured
Calculate by QxMD on Google Play
App details
App ID
com.qxmd.calculate
Publisher
QxMD Medical Software Inc.
Where it ranks on Google Play
Every top 200 chart it appears in across 23 countries.
| Country | Charts | Rank |
|---|---|---|
| Mexico | MedicalFree | #101 |
Apps near Calculate by QxMD on the chart
Medical Free, around #101.
Ratings
Google Play, worldwide.
Rating
4.5 ★
0 ratings
Measured
Ratings
0
Measured