Comparison

CTC vs CTCAE 6 Pro

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

CTC

This medical reference app provides quick access to standardized adverse event criteria and grading scales for oncology research. It allows for efficient logging, tracking, and reporting of patient events, including performance scores and custom entries. Data is kept strictly on-device for privacy and compliance.

Highlights
  • CTCAE v4 and v5 reference
  • Performance score integration (Karnofsky, ECOG, Lansky)
  • Advanced adverse event logger
  • Custom event creation
  • CSV data import/export
  • On-device data storage
Read full description

CTC-AE is a reference and educational tool for clinical researchers, oncologists, and healthcare professionals working with adverse event terminology and oncology performance status scales. The app provides fast, offline access to publicly available standards: • NCI Common Terminology Criteria for Adverse Events (CTC-AE v4.03 and v5.0) • ECOG Performance Status • Karnofsky Performance Status • Lansky Performance Status (pediatric) You can also keep personal reference notes about trials and patients, stored privately in your own iCloud account and synced across your Apple devices. Export your data as CSV at any time. KEY FEATURES • Complete CTC-AE v4.03 and v5.0 terminology with grades and definitions • Color-coded severity grades for quick visual reference • Multi-column layout optimized for iPad • Performance status scales (ECOG, Karnofsky, Lansky) • Personal trial and patient reference notes, stored privately in your own iCloud account and synced across iPhone, iPad, and Mac • CSV export • Optional Face ID / Touch ID protection • Optional name scrambling for on-screen privacy PRIVACY Your reference notes live in your private iCloud container. Arpacore B.V. has no access to this data, and no information is shared with any third party. INTENDED USE CTC-AE is intended for educational and reference purposes only. It is not a medical device. It is not intended to diagnose, prevent, monitor, predict, prognose, or treat any disease, injury, or disability, and does not provide medical advice. All clinical decisions remain the sole responsibility of qualified healthcare professionals. The CTC-AE terminology is published by the U.S. National Cancer Institute and is reproduced here for reference. This app is not affiliated with, endorsed by, or sponsored by the NCI or NIH. CTC-AE is also available natively on Mac, with full sync between your devices.

About

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.

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
Read full description

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

CTC4 screens
CTCAE 6 Pro4 screens

Verdict

The call

The clearest difference is price: CTCAE 6 Pro at Free against CTC's $3.99. CTCAE 6 Pro also leads on update cadence (monthly vs every 2 months) and iOS requirement (15.6 vs 17.6). On ads, in-app purchases 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

CostPrice · In-app purchases · Ads · Monetization

CTCAE 6 Pro is free to download; CTC costs $3.99 up front. CTC sells 1 one-off in-app purchase and CTCAE 6 Pro sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

CTC ships an update every 2 months, CTCAE 6 Pro monthly. The most recent releases landed on September 13, 2026 and September 25, 2026 respectively.

Scorecard4 real differences · 6 level
CTC versus CTCAE 6 Pro: the parameters behind the verdict, then further details
ParameterCTCCTCAE 6 Pro
Price$3.99Free — better
Rating—5.0 (8 ratings) — better
Positive reviews55.6% of reviews—
Number of ratings—8 — better
Update frequencyEvery 2 monthsMonthly — better
AdsNoNo
In-app purchasesYesYes
MonetizationPaidFreemium — better
DevicesiPhone, iPad, MaciPhone, iPad, iPod
Requires iOS17.615.6 — better
Further details — not scored
Size2 MB87 MB
Age rating17+17+
DeveloperArpacore B.V.Koichiro Watanabe

Customer experience

CTC

Written reviews9 reviews
Positive55.6%
Neutral33.3%
Negative11.1%

CTCAE 6 Pro

All ratings8 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

CTC

One-time1
  • Adverse Event Logger$3.99
2 purchases

CTCAE 6 Pro

Subscriptions2
  • Premium Plan – Monthly7 Days trial$1.991 Month
  • Premium Plan – Annual7 Days trial$9.991 Year

Questions

Is CTC free?
CTC costs $3.99, and also offers in-app purchases.
Is CTCAE 6 Pro free?
CTCAE 6 Pro is free to download, with in-app purchases available.
Do CTC or CTCAE 6 Pro have ads?
Neither CTC nor CTCAE 6 Pro shows ads.
Which is updated more often, CTC or CTCAE 6 Pro?
CTC ships an update every 2 months, and CTCAE 6 Pro monthly. Most recently, CTC was updated on September 13, 2026 and CTCAE 6 Pro on September 25, 2026.

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