Comparison

EBMcalc Pulmonary vs vhSpirometer

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

EBMcalc Pulmonary

This medical calculator provides pulmonary specialists with essential formulas, clinical criteria, and decision tools for daily use. It includes a wide range of calculations for lung function, gas exchange, and disease prediction. Users should always consult a doctor before making medical decisions based on the app's content.

Highlights
  • Pertinent medical formulae
  • Clinical criteria sets
  • Decision tree tools
  • Dose/unit converters
  • Pulmonary specialist tools
  • Lung function calculations
Features
Currently charting
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EBMcalc Pulmonary EBMcalc is the most popular and comprehensive Medical Calculator system on the web. It has been highly acclaimed, reviewed and tested over the last 25 years. EBMcalc users should not make any medical decisions based on app content without seeking their doctor's advice. EBMcalc Pulmonary encompasses pertinent medical formulae, clinical criteria sets, decision tree tools and dose/unit converters used every day by Pulmonary specialists. Equations included: A-a Gradient a/A Ratio AaPO2 Correction for FIO2 Base Excess Determination Carbon Dioxide Production Closing Capacity to Total Lung Volume Capacity Closing Capacity Closing Volume to Vital Capacity Ratio Diffusing capacity for carbon monoxide (DLCO) corrected for anemia Epoprostenol (Flolan) Infusion Rate Calculator Functional Residual Capacity Henderson-Hasselbach Equation In-Flight PaO2 Estimation (using PFT's) In-Flight PaO2 Estimation Inspiratory Capacity International Normalized Ratio of Prothrombin Time (INR) Lung Age Estimation for Smoking Cessation Counseling Lung Volume Multicalc Mean Vascular Pressure (systemic or pulmonary) Nasal Canula Oxygen Fractional Inspired O2 (FIO2) Estimate Oxygen Consumption Oxygen Content of Arterial Blood Oxygen Content of Venous Blood Oxygen Saturation Estimate from PO2 Oxygenation Index (OI) paO2 / FIO2 Ratio (for MODS Calculation) PaO2 Correction for FIO2 Peak Expiratory Flow Prediction Peak Expiratory Flow Variability in Asthma PFT Adjusted Predicted Values for Men MultiCalc PFT Adjusted Predicted Values for Women MultiCalc PFT Predicted Values for Boys MultiCalc PFT Predicted Values for Girls MultiCalc PFT Predicted Values for Men MultiCalc PFT Predicted Values for Women MultiCalc Pneumothorax Degree of Collapse Predicted postoperative FEV1 following lung resection surgery (anatomic method) Predicted postoperative FEV1 following lung resection surgery (perfusion method) Pulmonary Vascular Resistance Residual Volume to Total Lung Capacity Ratio Respiratory Quotient Right to Left Shunt Fraction Qs/Qt Systemic Vascular Resistance Total Lung Capacity Ventilation Index Vital Capacity Winter's Formula for Expected PCO2 Clinical Criteria Sets included: 6-Year Lung Cancer Risk Estimation in Current and Past Smokers APACHE II Scoring Systems (with and without diagnosis) BAP-65 prediction of in-hospital mortality and need for mechanical ventilation in COPD Bleeding Risk (any bleeding complication) on Warfarin Therapy Bleeding Risk (major complication) on Warfarin Therapy BODE Index for COPD Survival Prediction Clinical Pulmonary Infection Score (CPIS) Community-Acquired Pneumonia Severity Index (PSI) for Adults CURB Pneumonia Severity Score CURB-65 Pneumonia Severity Score DVT Probability (5 models) Epworth Sleepiness Scale (ESS) Gurd's Diagnostic Criteria for Fat Embolism Syndrome Lung Cancer One Year Risk Estimation (for smokers 50-75 years old) MODS Score: Multiple Organ Dysfunction Mycoplasma Pneumoniae Prediction in Children with Pneumonia Padua Score for Assessing Venous Thromboembolism Risk in Hospitalized Patients Pneumonia Mortality Prediction (4 models) Pneumonia Probability in Nursing Home Patients Pneumonia Risk in Post Operative Period of Non-Cardiac Surgery Polycythemia Vera Diagnostic Criteria Pulmonary Embolism Risk and Severity (4 calculators) Pulmonary Fibrosis Survival Prediction (2 models) SARS Prognosis Predictor (2 models) SMART COP and SMRT CO Scores for Pneumonia Severity Solitary pulmonary nodule malignancy risk (5 models) Tuberculosis Risk Prediction Decision Trees included: Anthrax Screening for Exposed Patients Arterial Blood Gas Interpretation Asthma Hospitalization One Year Risk Mycoplasma Pneumoniae Prediction SARS (Severe Acute Respiratory Distress Syndrome) CDC Case Definition To practice, teach and learn medicine based on solid, literature based evidence, EBMcalc provides easy to use, interactive tools for your Evidence-Based Medicine.

About

vhSpirometer

Features
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vhSpirometer is an advanced portable pulmonary function testing software designed for medical institutions, research organizations, and personal health monitoring. It provides accurate measurement and analysis of various lung function parameters, including FVC (Forced Vital Capacity), SVC (Slow Vital Capacity), and MVV (Maximum Voluntary Ventilation), covering key respiratory function indices commonly used in clinical settings. With its lightweight and compact design, it is suitable for use in hospitals, clinics, home environments, and outdoor screenings. The software enables real-time data collection and analysis, generating detailed test reports with reference value percentages and diagnostic conclusions, helping healthcare professionals quickly evaluate a patient’s lung function. Disclaimer: •This app and its devices are for use by healthcare professionals only, not for direct use by patients. All diagnoses and results are determined by the doctor based on the patient’s condition. The app provides test data for reference and should not be the sole basis for medical decisions. Always consult a doctor for medical decisions. Jurisdiction Statement: •This app and its devices are registered as Class II medical devices in China and can be used in any country that accepts China’s Class II medical device certification. Users in other countries should check local regulations or consult healthcare providers.

Screenshots

EBMcalc Pulmonary4 screens
vhSpirometer3 screens

Verdict

The call

The clearest difference is price: vhSpirometer at Free against EBMcalc Pulmonary's $4.99. vhSpirometer also leads on update cadence (every 2 months vs every 33 months). EBMcalc Pulmonary's advantage is chart position (#200 vs unranked) and iOS requirement (10.0 vs 15.6). On ads, in-app purchases and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

vhSpirometer is free to download; EBMcalc Pulmonary costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

EBMcalc Pulmonary ships an update every 33 months, vhSpirometer every 2 months. The most recent releases landed on September 7, 2026 and September 18, 2026 respectively.

Scorecard4 real differences · 7 level
EBMcalc Pulmonary versus vhSpirometer: the parameters behind the verdict, then further details
ParameterEBMcalc PulmonaryvhSpirometer
Price$4.99Free — better
Rating4.7 (3 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings3 — better—
Update frequencyEvery 33 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
Best chart rank#200 — better—
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS10.0 — better15.6
Further details — not scored
Size5 MB11 MB
Age rating17+4+
DeveloperFoundation Internet Services, LLCVales & Hills BioMedical Tech. Ltd

In-app purchases

None

EBMcalc Pulmonary

No in-app purchases

None

vhSpirometer

No in-app purchases

Questions

Is EBMcalc Pulmonary free?
EBMcalc Pulmonary costs $4.99, with no in-app purchases.
Is vhSpirometer free?
vhSpirometer is free to download, with no in-app purchases.
Do EBMcalc Pulmonary or vhSpirometer have ads?
Neither EBMcalc Pulmonary nor vhSpirometer shows ads.
Which is updated more often, EBMcalc Pulmonary or vhSpirometer?
EBMcalc Pulmonary ships an update every 33 months, and vhSpirometer every 2 months. Most recently, EBMcalc Pulmonary was updated on September 7, 2026 and vhSpirometer on September 18, 2026.

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