# ASCO Guidelines vs CTCAE 5 Pro

ASCO Guidelines and CTCAE 5 Pro both sit at 4.8 stars, but that hides the real split: 57% of ASCO Guidelines's written reviews are positive against 0% of CTCAE 5 Pro's. ASCO Guidelines also leads on in-app purchases (none vs 2) and ratings volume (257 vs 38). CTCAE 5 Pro's advantage is update cadence (every 5 weeks vs every 5 months). On price, rating, ads and device support there is nothing between them.

Both are free to download. CTCAE 5 Pro sells 2 in-app purchases, starting at $1.99 per month. ASCO Guidelines asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.8 for ASCO Guidelines against 4.8 for CTCAE 5 Pro. That said, the two scores are not equally well evidenced: ASCO Guidelines has 257 ratings behind it against 38, so its average is the more settled of the two. Written reviews are what separate them: 57% of ASCO Guidelines's written reviews are positive against 0% of CTCAE 5 Pro's.

ASCO Guidelines ships an update every 5 months, CTCAE 5 Pro every 5 weeks. The most recent releases landed on September 23, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | ASCO Guidelines | CTCAE 5 Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (257 ratings)](https://appshunter.io/ios/app/asco-guidelines/id1238827183/reviews) | [4.8 (38 ratings)](https://appshunter.io/ios/app/ctcae-5-pro/id1625569535/reviews) |
| Number of ratings | **257** | 38 |
| Positive reviews | **57.1% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 5 weeks** |
| Monetization | **Free** | Freemium |
| Size | 411 MB | 60 MB |
| Requires iOS | **10.0** | 15.5 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 17+ |
| Developer | [American Society of Clinical Oncology](https://appshunter.io/developer/1513043539) | [Koichiro Watanabe](https://appshunter.io/developer/1077985400) |

## What reviewers say

### ASCO Guidelines

[App page](https://appshunter.io/ios/app/asco-guidelines/id1238827183)

Access comprehensive cancer care guidelines and interactive tools to inform treatment decisions. This app supports healthcare providers, patients, and caregivers in implementing recommended cancer care options for various cancer types, aiming to improve the quality of care.

**Highlights:** Guideline recommendations for cancer care, Interactive treatment decision tools, Supports healthcare providers, Informs patients and caregivers, Covers various cancer types, Regularly updated content

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### CTCAE 5 Pro

[App page](https://appshunter.io/ios/app/ctcae-5-pro/id1625569535)

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.

**Highlights:** 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)

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly subscription | $1.99 | per month |
| Annual subscription | $9.99 | per year |


## Frequently asked questions

### Is ASCO Guidelines free?

ASCO Guidelines is free to download, with no in-app purchases.

### Is CTCAE 5 Pro free?

CTCAE 5 Pro is free to download, with in-app purchases available.

### Which has better reviews, ASCO Guidelines or CTCAE 5 Pro?

ASCO Guidelines and CTCAE 5 Pro are both rated 4.8 out of 5 on the App Store, from 257 and 38 ratings respectively.

### Do ASCO Guidelines or CTCAE 5 Pro have ads?

Neither ASCO Guidelines nor CTCAE 5 Pro shows ads.

### Which is updated more often, ASCO Guidelines or CTCAE 5 Pro?

ASCO Guidelines ships an update every 5 months, and CTCAE 5 Pro every 5 weeks. Most recently, ASCO Guidelines was updated on September 23, 2026 and CTCAE 5 Pro on September 22, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*