# CathSource vs ACC Quality Summit

The clearest difference is rating: ACC Quality Summit at 4.9 against CathSource's 1.6. ACC Quality Summit also leads on monetization model (free vs paid) and ratings volume (285 vs 23). CathSource's advantage is update cadence (every 2 months vs every 11 months). On price, review sentiment, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ACC Quality Summit holds the better App Store score, 4.9 against 1.6. That said, the two scores are not equally well evidenced: ACC Quality Summit has 285 ratings behind it against 23, so its average is the more settled of the two. Written reviews point the same way: 43% of CathSource's written reviews are positive against 50% of ACC Quality Summit's.

CathSource ships an update every 2 months, ACC Quality Summit every 11 months. The most recent releases landed on September 18, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | CathSource | ACC Quality Summit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.6 (23 ratings)](https://appshunter.io/ios/app/cathsource/id420847275/reviews) | **[4.9 (285 ratings)](https://appshunter.io/ios/app/acc-quality-summit/id1439363299/reviews)** |
| Number of ratings | 23 | **285** |
| Positive reviews | 42.9% of reviews | **50.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 11 months |
| Monetization | Paid | **Free** |
| Size | 79 MB | 88 MB |
| Requires iOS | 18.5 | **15.5** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 12+ | 17+ |
| Developer | [ECGsource LLC](https://appshunter.io/developer/377139096) | [American College of Cardiology](https://appshunter.io/developer/502174543) |

## What reviewers say

### CathSource

[App page](https://appshunter.io/ios/app/cathsource/id420847275)

A comprehensive medical reference focused on cardiac catheterization and angiography. It offers a searchable index of specialized topics, a database of videos of common and rare findings, and a collection of images including hemodynamic formulas and tables.

**Highlights:** Searchable index of cardiac catheterization topics, Database of coronary angiogram, ventriculogram, and aortogram videos, Image database with hemodynamic formulas and tables, Covers common and rare cardiovascular pathologies, Developed by practicing Interventional Cardiologists

**Features:** macOS Compatibility

**In-app purchases:** none


### ACC Quality Summit

[App page](https://appshunter.io/ios/app/acc-quality-summit/id1439363299)

This event guide allows attendees to personalize their schedule, view session details, and access faculty information. Stay connected with social media integration, receive live announcements, and download presentation materials.

**Highlights:** Personalized session schedule, Session details, Faculty information, Social media connectivity, Real-time announcements, Download presentation slides

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

**In-app purchases:** none


## Frequently asked questions

### Is CathSource free?

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

### Is ACC Quality Summit free?

ACC Quality Summit is free to download, with no in-app purchases.

### Which has better reviews, CathSource or ACC Quality Summit?

ACC Quality Summit is rated higher. CathSource averages 1.6 out of 5 from 23 ratings, while ACC Quality Summit averages 4.9 from 285 ratings.

### Do CathSource or ACC Quality Summit have ads?

Neither CathSource nor ACC Quality Summit shows ads.

### Which is updated more often, CathSource or ACC Quality Summit?

CathSource ships an update every 2 months, and ACC Quality Summit every 11 months. Most recently, CathSource was updated on September 18, 2026 and ACC Quality Summit on September 29, 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.*