# BSA Calculator vs Redo TAV

The clearest difference is rating: Redo TAV at 5.0 against BSA Calculator's 4.5. Redo TAV also leads on ads (none vs shown) and update cadence (every 5 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.

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

BSA Calculator ships an update every 23 months, Redo TAV every 5 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | BSA Calculator | Redo TAV |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (2 ratings)](https://appshunter.io/ios/app/bsa-calculator/id1337868410/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/redo-tav/id6462937010/reviews)** |
| Number of ratings | 2 | 2 |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 23 months | **Every 5 months** |
| Monetization | Ad-supported | **Free** |
| Size | 6 MB | 35 MB |
| Requires iOS | **14.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, 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


### Redo TAV

[App page](https://appshunter.io/ios/app/redo-tav/id6462937010)

This app offers systematic CT analysis for planning transcatheter aortic valve replacement procedures. It provides procedural guidance, including implant height and depth information, and allows users to generate visual reports of procedure data.

**Highlights:** Systematic CT analysis for Redo-TAV procedures, Valve CT appearance and dimensions, Step-by-step assessment guidance, Implant height and depth information, Procedural video clips, Procedure data and outcome reporting

**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 Redo TAV free?

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

### Which has better reviews, BSA Calculator or Redo TAV?

Redo TAV is rated higher. BSA Calculator averages 4.5 out of 5 from 2 ratings, while Redo TAV averages 5.0 from 2 ratings.

### Do BSA Calculator or Redo TAV have ads?

BSA Calculator shows ads; Redo TAV does not.

### Which is updated more often, BSA Calculator or Redo TAV?

BSA Calculator ships an update every 23 months, and Redo TAV every 5 months. Most recently, BSA Calculator was updated on November 2, 2026 and Redo TAV on November 3, 2026.

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