CTCAE 5 Pro vs MK5684
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
CTCAE 5 Pro
This app helps review and take notes on CTCAE documents. It offers local data storage for privacy and premium features like version comparison and advanced note-taking with a subscription.
- 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)
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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.
MK5684
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MSD MK5684-003 eCOA App is intended for use 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: MK5684 at none against CTCAE 5 Pro's 2. MK5684 also leads on iOS requirement (12.0 vs 15.5). On price, update cadence, 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. MK5684 asks for nothing beyond the download.
Both ship on a similar rhythm, roughly every 5 weeks. The most recent releases landed on September 22, 2026 and September 19, 2026 respectively.
| Parameter | CTCAE 5 Pro | MK5684 |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (38 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 38 — better | — |
| Update frequency | Every 5 weeks | Every 5 weeks |
| 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 | 85 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
MK5684
No in-app purchases









