# CARTOX vs Prezerve™

The clearest difference is update cadence: Prezerve™ at every 4 months against CARTOX's every 20 months. Prezerve™ also leads on iOS requirement (16.0 vs 26.4). CARTOX's advantage is rating (5.0 vs 4.8). 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.

CARTOX holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 6 and 9 respectively.

CARTOX ships an update every 20 months, Prezerve™ every 4 months. The most recent releases landed on November 3, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | CARTOX | Prezerve™ |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (6 ratings)](https://appshunter.io/ios/app/cartox/id1464005828/reviews)** | [4.8 (9 ratings)](https://appshunter.io/ios/app/prezerve/id6747895617/reviews) |
| Number of ratings | 6 | **9** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 20 months | **Every 4 months** |
| Monetization | Free | Free |
| Size | 6 MB | 53 MB |
| Requires iOS | 26.4 | **16.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 17+ | 17+ |
| Developer | [MD Anderson Cancer Center](https://appshunter.io/developer/618340093) | [Incyte Corporation](https://appshunter.io/developer/1398082616) |

## What reviewers say

### CARTOX

[App page](https://appshunter.io/ios/app/cartox/id1464005828)

This medical app aids clinicians in assessing and managing toxicities associated with cellular therapies, including Cytokine Release Syndrome (CRS) and Immune effector Cell-Associated Neurotoxicity Syndrome (ICANS). It provides grading methods and treatment recommendations for healthcare professionals caring for patients undergoing immune effector cell therapy.

**Highlights:** Toxicity grading, CRS assessment, ICANS assessment, Treatment recommendations, Antimicrobial prophylaxis guidance

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

**In-app purchases:** none


### Prezerve™

[App page](https://appshunter.io/ios/app/prezerve/id6747895617)

This app helps bone-marrow transplant patients track and share post-transplant symptoms with their care team. It allows for real-time updates with photos and data trends, and provides an educational library on post-transplant life. Designed for adults 18 and older.

**Highlights:** Track symptoms on specific body areas, Share photos and real-time updates, Keep care teams informed with reports, Visualize symptom severity and frequency, Access post-transplant educational articles

**In-app purchases:** none


## Frequently asked questions

### Is CARTOX free?

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

### Is Prezerve™ free?

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

### Which has better reviews, CARTOX or Prezerve™?

CARTOX is rated higher. CARTOX averages 5.0 out of 5 from 6 ratings, while Prezerve™ averages 4.8 from 9 ratings.

### Do CARTOX or Prezerve™ have ads?

Neither CARTOX nor Prezerve™ shows ads.

### Which is updated more often, CARTOX or Prezerve™?

CARTOX ships an update every 20 months, and Prezerve™ every 4 months. Most recently, CARTOX was updated on November 3, 2026 and Prezerve™ on October 30, 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.*