CTCAE v4.0 vs CTCAE 6 Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CTCAE v4.0
This medical reference app provides a standardized system for grading the severity of adverse events related to drug treatments or medical devices. It offers hierarchical navigation, bookmarking, and search functionality for quick access to definitions and grading standards.
- Standardized adverse event grading system
- Definitions for event severity (grades 1-5)
- Hierarchical navigation of categories
- Bookmark frequently used events
- Search across names, definitions, and grades
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The National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) is a standardized system to quantify or grade the severity of adverse events (AE) that occur with drug treatment or from medical devices. A definition of mild (grade 1), moderate (2), severe (3), life-threatening (4) and death related to AE (5) events is provided for each AE term. The CTCAE v4.02 was published by NCI on October 6, 2009, and is used by many healthcare providers and researchers to characterize adverse events consistently. The Center for Biomedical Informatics (CBMi) at The Children's Hospital of Philadelphia has converted the 190+ pages of the CTCAE v4.02 document into an intuitive iPhone application. With this application, healthcare providers can reference the full CTCAE v4.02 with an iPhone or iPod Touch, allowing for bedside grading at the time of a visit and generally allowing the information to be accessed from anywhere at any time. The application contains all published grading standards for all 26 categories of adverse events as well as event definitions. The application also offers a variety of advantages over the flat file CTCAE v4.02, including: * Hierarchical navigation of adverse event categories * Ability to bookmark adverse events and categories to quickly access frequently graded events * Search for events across names, definitions and grades This application is one example of the many ways in which CBMi helps transform clinical care and research at our institution and across the industry. The Children's Hospital of Philadelphia is a non-profit entity as defined by Section 501(c)(3) of the Internal Revenue Code of 1986. About The Children's Hospital of Philadelphia: The Children's Hospital of Philadelphia was founded in 1855 as the nation's first pediatric hospital. Through its long-standing commitment to providing exceptional patient care, training new generations of pediatric healthcare professionals and pioneering major research initiatives, Children's Hospital has fostered many discoveries that have benefited children worldwide. Its pediatric research program is among the largest in the country, ranking third in National Institutes of Health funding. In addition, its unique family-centered care and public service programs have brought the 460-bed hospital recognition as a leading advocate for children and adolescents. For more information, visit http://www.chop.edu. About The Center for Biomedical Informatics: The Center for Biomedical Informatics (CBMi) resides in The Children's Hospital of Philadelphia Research Institute as the home for development of innovative solutions to healthcare's immediate and long-term informatics needs. We provide informatics-focused services, products, and educational programs to Children's Hospital clinicians and researchers and seek to transform their craft with high-impact, low-cost solutions. For more information, visit http://www.research.chop.edu/cbmi. References: Please note that NCI has directed us to use the May 29, 2009 reference without regard to updates. Our app uses the most updated version of the CTCAE despite our reference to the original. National Cancer Institute Common Terminology Criteria for Adverse Events v4.0 NCI, NIH, DHHS. May 29, 2009 NIH publication # 09-7473
CTCAE 6 Pro
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.
- 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
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CTCAE 6 Pro helps you review and take notes on CTCAE content with ease. It is not intended for diagnosis, clinical decisions, or treatment planning. Standard Features: • Quick CTCAE Access: Browse CTCAE 6.0 content with ease • Unlimited Flags: Bookmark AEs without limits • Search with Highlighting: Easily spot keywords in context • Local Data Storage: Keep your data secure and private on your device Premium Features (Subscription Users): • Version Comparison (5.0 ⇄ 6.0) • Smart Notes: Organize CTCAE entries chronologically, use hashtags, and more • Spreadsheet to App: Turn your spreadsheet into a custom list app—no coding required • Easy Backups: Export to XLSX or CSV for flexibility • Optimized Printing & Sharing: Export HTML files for instant viewing on any desktop or laptop, with easy letter-size printing • Timeline Management: Track and log AEs on a day-by-day basis
Screenshots
Verdict
The clearest difference is rating: CTCAE 6 Pro at 5.0 against CTCAE v4.0's 3.5. CTCAE 6 Pro also leads on update cadence (monthly vs every 44 months). CTCAE v4.0's advantage is in-app purchases (none vs 2) and iOS requirement (9.2 vs 15.6). On price, ratings volume, ads 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. CTCAE 6 Pro sells 2 in-app purchases, starting at $1.99 per month. CTCAE v4.0 asks for nothing beyond the download.
CTCAE 6 Pro holds the better App Store score, 5.0 against 3.5. Both are backed by a comparable volume of ratings — 11 and 8 respectively.
CTCAE v4.0 ships an update every 44 months, CTCAE 6 Pro monthly. The most recent releases landed on October 10, 2026 and October 11, 2026 respectively.
| Parameter | CTCAE v4.0 | CTCAE 6 Pro |
|---|---|---|
| Price | Free | Free |
| Rating | 3.5 (11 ratings) | 5.0 (8 ratings) — better |
| Positive reviews | 16.7% of reviews | — |
| Number of ratings | 11 — better | 8 |
| Update frequency | Every 44 months | Monthly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Freemium |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 9.2 — better | 15.6 |
| Further details — not scored | ||
| Size | 3 MB | 87 MB |
| Age rating | 12+ | 17+ |
| Developer | The Children's Hospital of Philadelphia | Koichiro Watanabe |
Customer experience
CTCAE v4.0
CTCAE 6 Pro
In-app purchases
CTCAE v4.0
No in-app purchases
CTCAE 6 Pro
- Premium Plan – Monthly7 Days trial$1.991 Month
- Premium Plan – Annual7 Days trial$9.991 Year
Questions
Is CTCAE v4.0 free?
Is CTCAE 6 Pro free?
Which has better reviews, CTCAE v4.0 or CTCAE 6 Pro?
Do CTCAE v4.0 or CTCAE 6 Pro have ads?
Which is updated more often, CTCAE v4.0 or CTCAE 6 Pro?
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