# HepCalc vs Know HBV

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.

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.

## The numbers

| Metric | HepCalc | Know HBV |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (11 ratings)](https://appshunter.io/ios/app/hepcalc/id586813135/reviews)** | [4.3 (3 ratings)](https://appshunter.io/ios/app/know-hbv/id1523455855/reviews) |
| Number of ratings | **11** | 3 |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 4 months |
| Monetization | Free | Free |
| Size | 14 MB | 67 MB |
| Requires iOS | 17.5 | **12.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [Gary Poleynard MD](https://appshunter.io/developer/586813138) | [Hep B Moms](https://appshunter.io/developer/1519551534) |

## What reviewers say

### HepCalc

[App page](https://appshunter.io/ios/app/hepcalc/id586813135)

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.

**Highlights:** Liver-related calculators, Preserves entry data, Customizable web links, Editable clinical notes, U.S. - SI units conversion, Integrated web references

**Features:** macOS Compatibility

**In-app purchases:** none


### Know HBV

[App page](https://appshunter.io/ios/app/know-hbv/id1523455855)

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.

**Highlights:** Chronic hepatitis B monitoring guidance, Antiviral treatment recommendations, WHO and AASLD guideline adaptation, Educational tool for healthcare professionals, Resource-limited country focus

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is HepCalc free?

HepCalc is free to download, with no in-app purchases.

### Is Know HBV free?

Know HBV is free to download, with no in-app purchases.

### Which has better reviews, HepCalc or Know HBV?

HepCalc is rated higher. HepCalc averages 5.0 out of 5 from 11 ratings, while Know HBV averages 4.3 from 3 ratings.

### Do HepCalc or Know HBV have ads?

Neither HepCalc nor Know HBV shows ads.

### Which is updated more often, HepCalc or Know HBV?

HepCalc ships an update every 2 months, and Know HBV every 4 months. Most recently, HepCalc was updated on October 23, 2026 and Know HBV on October 1, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*