HepCalc vs Know HBV
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
HepCalc
This medical app provides a comprehensive suite of liver-related calculators, web links, and clinical notes. It preserves entry data across calculators and allows for customization of web links and notes, making it a valuable tool for clinicians managing liver disease.
- Liver-related calculators
- Preserves entry data
- Customizable web links
- Editable clinical notes
- U.S. - SI units conversion
- Integrated web references
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HepCalc is a collection of liver related calculators, web links, resources, and editable web links and clinical notes. ◆ Unlike most calculators, entry data is preserved between different calculators limiting the need for reentry of data. ◆ Set your own favorite web links ◆ Save clinical notes, clinical "pearls" in a organized fashion ◆ Integrated U.S. - SI units conversion ◆ Each calculator has a related web reference A must have for the clinician/house officer dealing with liver disease. The customizable WebLinks and Clinical Notes sections alone are valuable tools for anyone. Child-Pugh Score MELD (UNOS) -survival data -TIPS recommendations MELD MELD Sodium (UNOS) MELD 3.0/Survival Alcoholic Hepatitis Calculators: - ABIC -Combined: Lille Model +(MELD, Maddrey DF, ABIC) - Glasgow - Lille Model - Lille Model Projection (using day 0 of Rx, calculates decision making for bilirubin values on day 7) - Maddrey Discriminant Function - MELD alcoholic hepatitis score ( Includes survival percentage) Autoimmune Liver Disease Calculators: -Autoimmune hepatitis Score(1999 International AIH Group Report) -Autominnune hepatitis Simplified Score -AIH/PBC overlap (Paris Criteria) -PBC Survival Mayo GLOBE UK-PBC -PSC Survival Fibrosis Calculators: - APRI Fibrosis Score - FAST (Fibroscan™ + AST) Score - FIB4 Fibrosis Score - FORNS Fibrosis Score - HALT-C Cirrhosis Score - NAFLD Fibrosis Score -SAFE Fibrosis Score (Steatosis-associated Fibrosis Estimate) Risk Assessment Calculators: Liver Decompensation - Acute decompensation without ACLF: CLIF-C AD score and mortality -Acute liver failure - transplant free survival at 21 days - Acute on Chronic Liver Failure AARC score and mortality - Acute on Chronic Liver Failure CLIF-C ACLF score and mortality - Acute on Chronic Liver Failure NACSELD 30 day mortality - BE3A Score: Hep C DAA assessment for decompensated cirrhosis - Decompensation Risk - Hep C -TAM Score: 1 yr post transplant survival for ACLF-3 patients HCC Risk Hep B - HCC Risk Hep B: CHUK - HCC Risk Hep B: REACH B - HCC Risk Hep B on Rx (entecavir, tenofovir): PAGE B HCC Risk Hep C - HCC Risk Hep C : HALT-C - HCC Risk in Chronic Liver Disease: GALAD/GALADUS Other Risks -BEA Score: Baseline event anticipation for Hepatitis Deta -Cardiovascular Risk (CAD-LT): CV risk in LT candidates - CAR-OLT: 1 yr risk of cardiovascular event post OLT -Dili Mortality Risk: 6 mos mortality risk and comorbidity burden - Fungal Infection Risk - NACSELD - RUCAM for DILI assessment - Surgical Risk Cirrhosis: post op mortality major surgery -Surgical Risk Cirrhosis: VOCAL-Penn Score Other Calculators: -ANI (differentiate between alcoholic and non-alcoholic steatohepatitis) -Ascites, refractory -estimate ascites to be gained based on serum sodium and time passed -estimate sodium intake based on serum sodium and ascites gained -Body Mass Index - Portopulmonary Hypertension Calculator: - Pulmonary Vascular Resistance Calculator -diagnostic and UNOS transplant Criteria -HCV treatment tracker (calculates dates for end of Rx and SVR) -Mean arterial pressure -Wilson's Disease: EASL scoring system WebLinks: - Hepatology Societies - Hepatology Organizations - Other Resources (i.e. Drug Hepatoxicity, Hepatitis Rx drug interactions, etc) - Custom WebLinks (make your own links for reference, frequently used, etc.) Clinical Notes: - Create a title and store clinical information, pearls, or any other text for quick ready reference in one place - Can cut and paste from other text for ease of entry of your clinical data
Know HBV
This educational tool assists primary healthcare professionals in managing adults with chronic hepatitis B. It offers guidance on monitoring and recommends antiviral treatment based on WHO and AASLD guidelines. It is intended for healthcare providers and not for patient self-diagnosis or treatment decisions.
- Chronic hepatitis B monitoring guidance
- Antiviral treatment recommendations
- WHO and AASLD guideline adaptation
- Educational tool for healthcare professionals
- Resource-limited country focus
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The chronic hepatitis B Treatment Decision Tool for Adults is developed by the Asian Liver Center at Stanford University in response to the WHO Global Health Sector Strategy on Viral Hepatitis to increase treatment rates when indicated to at least 80% by 2030. The app is an educational tool intended for primary healthcare professionals particularly in resource-limited countries as a general guide in the monitoring of HBsAg positive adults, and when antiviral treatment would be recommended based on the guidelines adapted from the World Health Organization or from the American Association for the Study of Liver Diseases. This app provides general guidance to primary healthcare professionals and is not a substitute for the advice provided by specialists in the management of liver disease and chronic hepatitis. Any course of action recommended or suggested in this educational tool should not be undertaken by the healthcare professional without an evaluation of the patient’s condition and contraindications. The patient should be provided with information about hepatitis B facts, and the potential benefits and risks of antiviral treatment. The app is not intended for use by non-healthcare professionals or patients. Non-healthcare professionals or patients must seek a doctor’s advice in addition to using this app before making any medical decisions.
Screenshots
Verdict
The clearest difference is rating: HepCalc at 5.0 against Know HBV's 4.3. HepCalc also leads on ratings volume (11 vs 3). Know HBV's advantage is iOS requirement (12.0 vs 17.5). On price, review sentiment, update cadence and ads 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
HepCalc holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 11 and 3 respectively. Written reviews split almost evenly too, at 100% and 100% positive.
HepCalc ships an update every 2 months, Know HBV every 4 months. The most recent releases landed on October 23, 2026 and October 1, 2026 respectively.
| Parameter | HepCalc | Know HBV |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (11 ratings) — better | 4.3 (3 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 11 — better | 3 |
| Update frequency | Every 2 months — better | Every 4 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.5 | 12.0 — better |
| Further details — not scored | ||
| Size | 14 MB | 67 MB |
| Age rating | 17+ | 17+ |
| Developer | Gary Poleynard MD | Hep B Moms |
Customer experience
HepCalc
Know HBV
In-app purchases
HepCalc
No in-app purchases
Know HBV
No in-app purchases









