EBMcalc Pulmonary vs ECG Challenge
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Pertinent medical formulae
- Clinical criteria sets
- Decision tree tools
- Dose/unit converters
- Pulmonary specialist tools
- Lung function calculations
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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.
ECG Challenge
This app offers over 150 real-world ECG strips for medical professionals and students to practice and improve their interpretation skills. It provides detailed rationales and personalized study options to build confidence and enhance patient care.
- 150+ real-world ECG strips
- Detailed rationales
- Personalized study options
- Progress tracking
- Clinically obtained ECGs
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Sharpen Your ECG Interpretation Skills – Anytime, Anywhere Master the art of ECG interpretation with ECG Challenge, the go-to app for paramedics, nurses, medical students, and physicians. Created by Dawn Altman, a highly respected nurse, paramedic, and the ECG Guru, this app features over 150 real-world, clinically obtained ECGs to help you build confidence, improve accuracy, and enhance patient care. Why Choose ECG Challenge? Real-World Practice – Work with authentic ECG strips based on actual clinical cases. Smart Learning Tools – Gain deeper understanding with detailed rationales and helpful hints. Personalized Study Experience – Choose between random review or structured challenges to match your learning style. Track Your Progress – The “Mastered It” feature allows you to focus on areas that need more attention. Built with Limmer Education’s trusted review technology, ECG Challenge delivers a dynamic, effective, and engaging way to refine your ECG interpretation skills—so you can make confident, accurate decisions in real-world scenarios. Download today and take your ECG skills to the next level.
Screenshots
Verdict
The clearest difference is rating: ECG Challenge at 5.0 against EBMcalc Pulmonary's 4.7. ECG Challenge also leads on update cadence (every 11 months vs every 33 months) and chart position (#55 vs unranked). EBMcalc Pulmonary's advantage is ratings volume (3 vs 1) and price ($4.99 vs $5.99). On review sentiment, ads, in-app purchases and monetization model 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
EBMcalc Pulmonary costs $4.99 and ECG Challenge $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.
ECG Challenge holds the better App Store score, 5.0 against 4.7. Both are backed by a comparable volume of ratings — 3 and 1 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
EBMcalc Pulmonary ships an update every 33 months, ECG Challenge every 11 months. The most recent releases landed on November 1, 2026 and November 6, 2026 respectively.
| Parameter | EBMcalc Pulmonary | ECG Challenge |
|---|---|---|
| Price | $4.99 — better | $5.99 |
| Rating | 4.7 (3 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 3 — better | 1 |
| Update frequency | Every 33 months | Every 11 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Best chart rank | — | #55 — better |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 10.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 5 MB | 51 MB |
| Age rating | 17+ | 17+ |
| Developer | Foundation Internet Services, LLC | Limmer Creative |
Customer experience
EBMcalc Pulmonary
ECG Challenge
In-app purchases
EBMcalc Pulmonary
No in-app purchases
ECG Challenge
No in-app purchases
Questions
Is EBMcalc Pulmonary free?
Is ECG Challenge free?
Which has better reviews, EBMcalc Pulmonary or ECG Challenge?
Do EBMcalc Pulmonary or ECG Challenge have ads?
Which is updated more often, EBMcalc Pulmonary or ECG Challenge?
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