# ASCP eBooks vs RBCX Calculation Tool

The clearest difference is rating: RBCX Calculation Tool at 4.8 against ASCP eBooks's 1.0. ASCP eBooks's advantage is iOS requirement (7.0 vs 15.6). On price, ratings volume, 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.

RBCX Calculation Tool holds the better App Store score, 4.8 against 1.0. Both are backed by a comparable volume of ratings — 8 and 6 respectively.

ASCP eBooks ships an update every 8 months, RBCX Calculation Tool every 15 months. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | ASCP eBooks | RBCX Calculation Tool |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.0 (8 ratings)](https://appshunter.io/ios/app/ascp-ebooks/id827776656/reviews) | **[4.8 (6 ratings)](https://appshunter.io/ios/app/rbcx-calculation-tool/id1457982121/reviews)** |
| Number of ratings | **8** | 6 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 8 months** | Every 15 months |
| Monetization | Free | Free |
| Size | 86 MB | 26 MB |
| Requires iOS | **7.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [American Society of Clinical Pathology](https://appshunter.io/developer/803335237) | [Terumo BCT](https://appshunter.io/developer/1023483386) |

## What reviewers say

### ASCP eBooks

[App page](https://appshunter.io/ios/app/ascp-ebooks/id827776656)

Access and read ASCP Press publications offline on your Apple devices. This app allows you to bookmark, highlight, take notes, and search within downloaded eBooks. Enjoy enhanced reading with adjustable font sizes and brightness.

**Highlights:** Offline eBook reading, Bookmark and note-taking, Highlighting, Full-text search, Adjustable font size and brightness, High-resolution image zoom

**Features:** macOS Compatibility

**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 ASCP eBooks free?

ASCP eBooks 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, ASCP eBooks or RBCX Calculation Tool?

RBCX Calculation Tool is rated higher. ASCP eBooks averages 1.0 out of 5 from 8 ratings, while RBCX Calculation Tool averages 4.8 from 6 ratings.

### Do ASCP eBooks or RBCX Calculation Tool have ads?

Neither ASCP eBooks nor RBCX Calculation Tool shows ads.

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

ASCP eBooks ships an update every 8 months, and RBCX Calculation Tool every 15 months. Most recently, ASCP eBooks was updated on October 23, 2026 and RBCX Calculation Tool on October 24, 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.*