# CathSource vs BifurcAID 3D

The clearest difference is review sentiment: BifurcAID 3D at 100% against CathSource's 38%. BifurcAID 3D also leads on rating (5.0 vs 1.6) and monetization model (ad-supported vs paid). CathSource's advantage is ads (none vs shown) and update cadence (every 2 months vs every 12 months). On price, in-app purchases and device support there is nothing between them.

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

BifurcAID 3D holds the better App Store score, 5.0 against 1.6. That said, the two scores are not equally well evidenced: CathSource has 23 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 38% of CathSource's written reviews are positive against 100% of BifurcAID 3D's.

CathSource ships an update every 2 months, BifurcAID 3D every 12 months. The most recent releases landed on October 12, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | CathSource | BifurcAID 3D |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.6 (23 ratings)](https://appshunter.io/ios/app/cathsource/id420847275/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/bifurcaid-3d/id1570640326/reviews)** |
| Number of ratings | **23** | 4 |
| Positive reviews | 38.5% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 2 months** | Every 12 months |
| Monetization | Paid | **Ad-supported** |
| Size | 79 MB | 204 MB |
| Requires iOS | 18.5 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 12+ | 17+ |
| Developer | [ECGsource LLC](https://appshunter.io/developer/377139096) | [Icahn School of Medicine at Mount Sinai](https://appshunter.io/developer/972625667) |

## 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


### BifurcAID 3D

[App page](https://appshunter.io/ios/app/bifurcaid-3d/id1570640326)

This app simplifies understanding bifurcation lesion treatment using 3D animations. It provides detailed instructions for various two-stent, provisional, and bailout techniques for left main and non-left main lesions.

**Highlights:** 3D animations for lesion treatment, Detailed instructions, Two-stent techniques, Provisional techniques, Bailout techniques, Left main and non-left main lesions

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is CathSource free?

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

### Is BifurcAID 3D free?

BifurcAID 3D is free to download, with no in-app purchases.

### Which has better reviews, CathSource or BifurcAID 3D?

BifurcAID 3D is rated higher. CathSource averages 1.6 out of 5 from 23 ratings, while BifurcAID 3D averages 5.0 from 4 ratings.

### Do CathSource or BifurcAID 3D have ads?

BifurcAID 3D shows ads; CathSource does not.

### Which is updated more often, CathSource or BifurcAID 3D?

CathSource ships an update every 2 months, and BifurcAID 3D every 12 months. Most recently, CathSource was updated on October 12, 2026 and BifurcAID 3D on October 11, 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.*