# iTransfuse vs RBCX Calculation Tool

The clearest difference is rating: RBCX Calculation Tool at 4.8 against iTransfuse's 3.3. iTransfuse's advantage is update cadence (every 6 months vs every 15 months). On price, ratings volume, ads and in-app purchases there is nothing between them.

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

RBCX Calculation Tool holds the better App Store score, 4.8 against 3.3. Both are backed by a comparable volume of ratings — 8 and 5 respectively.

iTransfuse ships an update every 6 months, RBCX Calculation Tool every 15 months. The most recent releases landed on October 9, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | iTransfuse | RBCX Calculation Tool |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.3 (8 ratings)](https://appshunter.io/ios/app/itransfuse/id946782488/reviews) | **[4.8 (5 ratings)](https://appshunter.io/ios/app/rbcx-calculation-tool/id1457982121/reviews)** |
| Number of ratings | **8** | 5 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 months** | Every 15 months |
| Monetization | Free | Free |
| Size | 33 MB | 26 MB |
| Requires iOS | **15.1** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [Australian Red Cross Society](https://appshunter.io/developer/553097736) | [Terumo BCT](https://appshunter.io/developer/1023483386) |

## What reviewers say

### iTransfuse

[App page](https://appshunter.io/ios/app/itransfuse/id946782488)

Provides healthcare professionals with evidence-based resources for safe blood transfusions. Access educational tools, diagnostic information on transfusion reactions, and guidance for prescribing red cells and platelets at the bedside.

**Highlights:** Bedside transfusion education, Evidence-based transfusion guidance, Red cell and platelet prescription support, Transfusion reaction diagnostics, Access to transfusion resources

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

**In-app purchases:** none


### RBCX Calculation Tool

[App page](https://appshunter.io/ios/app/rbcx-calculation-tool/id1457982121)

This medical tool assists healthcare professionals in estimating the required replacement fluid volume for red blood cell exchange procedures on the Spectra Optia system. It calculates volumes based on patient and fluid data to achieve target Hct and FCR, and can suggest custom primes.

**Highlights:** Estimate replacement fluid volume, Calculate target Hct and FCR, Determine custom prime recommendation, Uses patient and fluid data, Supports Spectra Optia system

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is iTransfuse free?

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

### Is RBCX Calculation Tool free?

RBCX Calculation Tool is free to download, with no in-app purchases.

### Which has better reviews, iTransfuse or RBCX Calculation Tool?

RBCX Calculation Tool is rated higher. iTransfuse averages 3.3 out of 5 from 8 ratings, while RBCX Calculation Tool averages 4.8 from 5 ratings.

### Do iTransfuse or RBCX Calculation Tool have ads?

Neither iTransfuse nor RBCX Calculation Tool shows ads.

### Which is updated more often, iTransfuse or RBCX Calculation Tool?

iTransfuse ships an update every 6 months, and RBCX Calculation Tool every 15 months. Most recently, iTransfuse was updated on October 9, 2026 and RBCX Calculation Tool on September 25, 2026.

---

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