# BSA Calculator vs Valve PPM

The clearest difference is rating: Valve PPM at 5.0 against BSA Calculator's 4.5. Valve PPM also leads on ads (none vs shown) and update cadence (every 2 months vs every 23 months). On price, ratings volume, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Valve PPM holds the better App Store score, 5.0 against 4.5. Both are backed by a comparable volume of ratings — 2 and 3 respectively.

BSA Calculator ships an update every 23 months, Valve PPM every 2 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | BSA Calculator | Valve PPM |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (2 ratings)](https://appshunter.io/ios/app/bsa-calculator/id1337868410/reviews) | **[5.0 (3 ratings)](https://appshunter.io/ios/app/valve-ppm/id1604258260/reviews)** |
| Number of ratings | 2 | **3** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 23 months | **Every 2 months** |
| Monetization | Ad-supported | **Free** |
| Size | 6 MB | 37 MB |
| Requires iOS | **14.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 12+ |
| Developer | [Yoshinori Horata](https://appshunter.io/developer/1224591575) | [KRUTSCH](https://appshunter.io/developer/1454678018) |

## What reviewers say

### BSA Calculator

[App page](https://appshunter.io/ios/app/bsa-calculator/id1337868410)

Calculate Body Surface Area (BSA) using metric or imperial units. Offers multiple BSA equations for accurate medical calculations. Essential for healthcare professionals and researchers.

**Highlights:** Body Surface Area calculation, Metric and Imperial units, Multiple BSA equations, User-friendly interface

**Features:** macOS Compatibility

**In-app purchases:** none


### Valve PPM

[App page](https://appshunter.io/ios/app/valve-ppm/id1604258260)

This tool assists medical professionals in assessing implanted prosthetic cardiac valves. It offers guidance for checking existing valve function and selecting the optimal valve before implantation based on patient and prosthesis parameters.

**Highlights:** Assess implanted valve function, Select optimal valve before implantation, Analyze patient and prosthesis parameters, Identify potential patient-prosthesis mismatch, Determine intrinsic prosthesis dysfunction

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is BSA Calculator free?

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

### Is Valve PPM free?

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

### Which has better reviews, BSA Calculator or Valve PPM?

Valve PPM is rated higher. BSA Calculator averages 4.5 out of 5 from 2 ratings, while Valve PPM averages 5.0 from 3 ratings.

### Do BSA Calculator or Valve PPM have ads?

BSA Calculator shows ads; Valve PPM does not.

### Which is updated more often, BSA Calculator or Valve PPM?

BSA Calculator ships an update every 23 months, and Valve PPM every 2 months. Most recently, BSA Calculator was updated on November 2, 2026 and Valve PPM on November 3, 2026.

---

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