# CTCAE 6 Pro vs Shared Investigator Platform

The clearest difference is in-app purchases: Shared Investigator Platform at none against CTCAE 6 Pro's 2. CTCAE 6 Pro's advantage is update cadence (monthly vs every 6 months). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. CTCAE 6 Pro sells 2 in-app purchases, starting at $1.99 per month. Shared Investigator Platform asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for CTCAE 6 Pro against 5.0 for Shared Investigator Platform. Both are backed by a comparable volume of ratings — 10 and 5 respectively.

CTCAE 6 Pro ships an update monthly, Shared Investigator Platform every 6 months. The most recent releases landed on October 26, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | CTCAE 6 Pro | Shared Investigator Platform |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (10 ratings)](https://appshunter.io/ios/app/ctcae-6-pro/id1625560237/reviews) | [5.0 (5 ratings)](https://appshunter.io/ios/app/shared-investigator-platform/id6450245868/reviews) |
| Number of ratings | **10** | 5 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Monthly** | Every 6 months |
| Monetization | Freemium | **Free** |
| Size | 87 MB | 44 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Koichiro Watanabe](https://appshunter.io/developer/1077985400) | [Cognizant Technology Solutions](https://appshunter.io/developer/387144373) |

## What reviewers say

### CTCAE 6 Pro

[App page](https://appshunter.io/ios/app/ctcae-6-pro/id1625560237)

Easily review and annotate medical toxicity criteria. Bookmark adverse events, search keywords, and organize entries chronologically. Offers local data storage and optional premium features for advanced note-taking and data export.

**Highlights:** Quick CTCAE 6.0 content access, Unlimited adverse event bookmarking, Keyword search with highlighting, Local data storage, Version comparison (5.0 ⇄ 6.0), Smart notes and timeline management, Spreadsheet to custom list app conversion

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Plan – Monthly | $1.99 | per month |
| Premium Plan – Annual | $9.99 | per year |


### Shared Investigator Platform

[App page](https://appshunter.io/ios/app/shared-investigator-platform/id6450245868)

This mobile application allows clinical trial site users to manage their actions on the Shared Investigator Platform. It facilitates easy login, E-signing, reviewing pending actions, accepting study invitations, and managing study staff. Users can also access study documents, complete tasks, and receive important notifications.

**Highlights:** User-friendly interface, E-sign functionality, Biometric authentication, Review pending actions, Accept study invitations, Manage study staff, Access study documents

**In-app purchases:** none


## Frequently asked questions

### Is CTCAE 6 Pro free?

CTCAE 6 Pro is free to download, with in-app purchases available.

### Is Shared Investigator Platform free?

Shared Investigator Platform is free to download, with no in-app purchases.

### Which has better reviews, CTCAE 6 Pro or Shared Investigator Platform?

CTCAE 6 Pro and Shared Investigator Platform are both rated 5.0 out of 5 on the App Store, from 10 and 5 ratings respectively.

### Do CTCAE 6 Pro or Shared Investigator Platform have ads?

Neither CTCAE 6 Pro nor Shared Investigator Platform shows ads.

### Which is updated more often, CTCAE 6 Pro or Shared Investigator Platform?

CTCAE 6 Pro ships an update monthly, and Shared Investigator Platform every 6 months. Most recently, CTCAE 6 Pro was updated on October 26, 2026 and Shared Investigator Platform on October 16, 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.*