CTCAE 5 Pro vs C4 Therapeutics
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CTCAE 5 Pro
This app provides easy access to CTCAE documentation and supports local data storage for enhanced privacy. Premium features include version comparison, advanced note-taking, custom app creation from spreadsheets, and flexible data backup options.
- Streamlined CTCAE Document Access
- Local Data Storage
- Version Comparison Tool
- Advanced Notes Feature
- Custom App Creation
- Flexible Backup and Archiving
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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.
C4 Therapeutics
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App is intended for use to collect patient reported outcomes relating to a clinical trial. Patients must be given accounts by a participating site in order to log in to the app.
Screenshots
Verdict
The clearest difference is in-app purchases: C4 Therapeutics at none against CTCAE 5 Pro's 2. C4 Therapeutics also leads on update cadence (every 2 weeks vs every 5 weeks) and iOS requirement (12.0 vs 15.5). On price, 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 5 Pro sells 2 in-app purchases, starting at $1.99 per month. C4 Therapeutics asks for nothing beyond the download.
CTCAE 5 Pro ships an update every 5 weeks, C4 Therapeutics every 2 weeks. The most recent releases landed on November 12, 2026 and October 31, 2026 respectively.
| Parameter | CTCAE 5 Pro | C4 Therapeutics |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (45 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 45 — better | — |
| Update frequency | Every 5 weeks | Every 2 weeks — better |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Freemium | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.5 | 12.0 — better |
| Further details — not scored | ||
| Size | 60 MB | 77 MB |
| Age rating | 17+ | 12+ |
| Developer | Koichiro Watanabe | ERT, INC |
In-app purchases
CTCAE 5 Pro
- Monthly subscription7 Days trial$1.991 Month
- Annual subscription7 Days trial$9.991 Year
C4 Therapeutics
No in-app purchases
Questions
Is CTCAE 5 Pro free?
Is C4 Therapeutics free?
Do CTCAE 5 Pro or C4 Therapeutics have ads?
Which is updated more often, CTCAE 5 Pro or C4 Therapeutics?
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