RBCX Calculation Tool vs ASPN Go
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
RBCX Calculation Tool
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.
- Estimate replacement fluid volume
- Calculate target Hct and FCR
- Determine custom prime recommendation
- Uses patient and fluid data
- Supports Spectra Optia system
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The Spectra Optia® Apheresis System RBCX Calculation Tool is intended to help medical professionals who are responsible for prescribing and performing red blood cell exchange (RBCX) procedures to estimate the volume of replacement fluid required to perform a procedure on the Spectra Optia system. Using the same patient data and the same fluid data that is entered on the Spectra Optia system, the RBCX Calculation Tool calculates and displays the estimated volume of replacement fluid required to achieve the target Hct and FCR. It can also determine whether a custom prime is recommended. While the tool is intended to help prepare for a procedure, it is not intended to be used for making medical decisions. Use of the Spectra Optia® Apheresis System RBCX Calculation Tool on iOS requires iOS version 14.0 or above. For more information about the tool, see the About page.
ASPN Go
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The official American Society of Pediatric Nephrology (ASPN) app is your year-round connection to a wealth of resources and opportunities. Designed for ASPN members only, this app provides seamless access to events, curated content, and collaborative tools, fostering a dynamic community within the field of pediatric nephrology.
Screenshots
Verdict
The clearest difference is update cadence: ASPN Go at every 6 months against RBCX Calculation Tool's every 15 months. On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
RBCX Calculation Tool ships an update every 15 months, ASPN Go every 6 months. The most recent releases landed on October 11, 2026 and October 9, 2026 respectively.
| Parameter | RBCX Calculation Tool | ASPN Go |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (5 ratings) — better | — |
| Number of ratings | 5 — better | — |
| Update frequency | Every 15 months | Every 6 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 26 MB | 55 MB |
| Age rating | 4+ | 17+ |
| Developer | Terumo BCT | The American Society of Pediatric Nephrology |
In-app purchases
RBCX Calculation Tool
No in-app purchases
ASPN Go
No in-app purchases
Questions
Is RBCX Calculation Tool free?
Is ASPN Go free?
Do RBCX Calculation Tool or ASPN Go have ads?
Which is updated more often, RBCX Calculation Tool or ASPN Go?
Other comparisons
