# CTCAE 5 Pro — Beyond paper-based management

> Tool for reviewing and noting CTCAE documents with local storage and premium features. (iPhone/iPad app by Koichiro Watanabe.)

- Source: https://appshunter.io/ios/app/ctcae-5-pro/id1625569535 (this page in markdown: same URL + `.md`)
- Developer: [Koichiro Watanabe](https://appshunter.io/developer/1077985400)
- Category: Medical, Education
- Price: Free with in-app purchases
- Rating: 4.80/5 from 38 App Store ratings · 1 written reviews indexed
- Age rating: 17+
- Requires: iOS 15.5 · 60 MB
- Languages: American English
- Released: 2024-03-01
- Data updated: 2026-08-15
- Monetization: freemium
- User reviews in markdown: https://appshunter.io/ios/app/ctcae-5-pro/id1625569535/reviews.md

## What is CTCAE 5 Pro?

CTCAE 5 Pro is designed to assist in the documentation, review, and reference of CTCAE-related information. This app is intended for informational support and is not designed for medical purposes such as diagnosis, clinical decision-making, or treatment recommendations. Users are responsible for verifying all information and making clinical decisions.

::::::::: Standard features (available to all users) ::::::

- Streamlined CTCAE Document Access - Easily navigate CTCAE 5.0 documents using an intuitive interface.
- Enhanced privacy with local data storage - protect your data by storing it locally instead of relying on cloud services, ensuring privacy and control.

::::::::: Premium Features (available with subscription) :::::::

- Version Comparison Tool - Easily compare different versions of CTCAE 5.0 and 4.03.
- Advanced Notes feature - allows you to record CTCAEs in chronological order. You can also use hashtags and other features to efficiently organize and track notes for important information.
- Custom App Creation Feature - Simply import a spreadsheet and convert it into a list app. No programming knowledge is required.
- Flexible backup and archiving solution - easily back up and archive data in formats such as XLSX and CSV for versatility and accessibility.
- More features are available in the Premium version.

Note: With the Premium feature, a minimal number of files are automatically stored in a secure iCloud Drive to resume link information between files. This can be turned off based on user preference.

## Key features

- Streamlined CTCAE Document Access
- Local data storage for enhanced privacy
- Version comparison tool
- Advanced chronological note-taking with hashtags
- Custom app creation from spreadsheets
- Flexible backup and archiving (XLSX, CSV)

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Monthly subscription | $1.99 | per month |
| Annual subscription | $9.99 | per year |


## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/ctcae-5-pro/id1625569535/reviews.md

### 1/5 — 5.0

*2026-04-17*

App will not launch . iPhone 15 pro max.

**Developer response:** We are very sorry for the trouble. We have released v1.2.8 with potential fixes, but we want to ensure this is fully resolved for you.

To investigate further, could you please contact us at info@icommuse.com with the following:

Your iOS version.

When it crashes (e.g., immediately after tapping the icon, or on the splash screen).

If possible, please enable "Share with App Developers" in your iPhone Settings (Privacy & Security > Analytics & Improvements). This allows us to receive the crash logs through Apple and pinpoint the cause.

We appreciate your patience and help in making the app better!

## Frequently asked questions about CTCAE 5 Pro

### What is CTCAE 5 Pro used for?

CTCAE 5 Pro is designed to assist users in reviewing and taking notes on CTCAE documents. It is not intended for medical diagnosis, clinical decision making, or treatment plan coordination.

### Does CTCAE 5 Pro have ads?

No, CTCAE 5 Pro does not contain advertisements. The app is free to download and use with optional premium features available via subscription.

### What are the premium features of CTCAE 5 Pro?

Premium features include a version comparison tool for CTCAE 5.0 and 4.03, advanced notes with chronological recording and hashtags, custom app creation from spreadsheets, and flexible backup/archiving solutions.

### How much does CTCAE 5 Pro cost?

The app is free to download and use with standard features. Premium features are available through a monthly subscription of $1.99 or an annual subscription of $9.99, both offering a 7-day free trial.

### What devices is CTCAE 5 Pro compatible with?

CTCAE 5 Pro is compatible with iPhone, iPad, and iPod devices. It is rated for users aged 17 and older.

### How often is CTCAE 5 Pro updated?

The app was last updated on February 23, 2026, with version 1.2.5. This indicates a recent update, suggesting ongoing development and support.

### Where is my data stored in CTCAE 5 Pro?

Standard features utilize local data storage for enhanced privacy and control. With premium features, a minimal number of files may be stored in iCloud Drive for link information, which can be turned off by user preference.

### Can I compare different CTCAE versions with CTCAE 5 Pro?

Yes, the premium version of CTCAE 5 Pro includes a version comparison tool that allows you to easily compare different versions of CTCAE 5.0 and 4.03.

## Version history (last 5 releases)

### 1.2.9 — 2026-06-23

Improved: security and stability

Exclusive Premium offer: Get INFOBRIDGE Pro at no cost

### 1.2.8 — 2026-04-25

Improved stability and fixed launch issues for certain devices (including iPhone 15 Pro Max).

### 1.2.7 — 2026-04-04

Improved: Performance
Fixed: An issue where app data would unexpectedly reset on certain devices.
Fixed: A bug that caused the Premium status to display incorrectly.

### 1.2.6 — 2026-04-01

Improved: Security and Performance.
Fixed: minor bugs.

### 1.2.5 — 2026-02-23

Improved: security and stability

## More apps by Koichiro Watanabe

- [Talk Mall](https://appshunter.io/ios/app/talk-mall/id1244010454)
- [CTCAE 6 Pro](https://appshunter.io/ios/app/ctcae-6-pro/id1625560237)
- [INFOBRIDGE](https://appshunter.io/ios/app/infobridge/id6760969677)

All apps by Koichiro Watanabe: https://appshunter.io/developer/1077985400

## Related topics

[ctcae plus](https://appshunter.io/ios/topics/ctcae-plus) · [ctcae 5 pro](https://appshunter.io/ios/topics/ctcae-5-pro) · [ctcae](https://appshunter.io/ios/topics/ctcae)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-15.*