# ECGsource vs PCI App

The clearest difference is price: PCI App at Free against ECGsource's $0.99. PCI App also leads on rating (5.0 vs 3.0) and review sentiment (100% vs 67%). ECGsource's advantage is chart position (#55 vs unranked) and iOS requirement (9.0 vs 15.1). On ratings volume, update cadence, ads and in-app purchases there is nothing between them.

PCI App is free to download; ECGsource costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

PCI App holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 8 and 5 respectively. Written reviews point the same way: 67% of ECGsource's written reviews are positive against 100% of PCI App's.

ECGsource ships an update every 4 months, PCI App every 2 months. The most recent releases landed on October 7, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | ECGsource | PCI App |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [3.0 (8 ratings)](https://appshunter.io/ios/app/ecgsource/id377139093/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/pci-app/id1607148631/reviews)** |
| Number of ratings | **8** | 5 |
| Positive reviews | 66.7% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | Paid | **Free** |
| Best chart rank | **#55** | — |
| Size | 349 MB | 37 MB |
| Requires iOS | **9.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 12+ |
| Developer | [ECGsource LLC](https://appshunter.io/developer/377139096) | [KRUTSCH](https://appshunter.io/developer/1454678018) |

## What reviewers say

### ECGsource

[App page](https://appshunter.io/ios/app/ecgsource/id377139093)

**Currently charting:** #55 Top Paid · Medical (US App Store)

This medical education app provides a searchable reference for ECG diagnoses and criteria, sample ECG images, and video tutorials. It's designed for medical students and professionals to aid in electrocardiogram interpretation and board review.

**Highlights:** Searchable ECG diagnoses and criteria, High-resolution sample ECG images, ECG quiz (demo), Video tutorials for beginners, Board review preparation

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

**In-app purchases:** none


### PCI App

[App page](https://appshunter.io/ios/app/pci-app/id1607148631)

This medical app provides a step-by-step algorithmic guide for percutaneous coronary interventions. Users can browse detailed sections, watch case studies, and listen to relevant podcasts.

**Highlights:** Algorithmic step-by-step approach, Percutaneous coronary interventions, Browse parts, chapters, and sections, Watch case studies, Listen to podcasts

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

**In-app purchases:** none


## Frequently asked questions

### Is ECGsource free?

ECGsource costs $0.99, with no in-app purchases.

### Is PCI App free?

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

### Which has better reviews, ECGsource or PCI App?

PCI App is rated higher. ECGsource averages 3.0 out of 5 from 8 ratings, while PCI App averages 5.0 from 5 ratings.

### Do ECGsource or PCI App have ads?

Neither ECGsource nor PCI App shows ads.

### Which is updated more often, ECGsource or PCI App?

ECGsource ships an update every 4 months, and PCI App every 2 months. Most recently, ECGsource was updated on October 7, 2026 and PCI App on September 7, 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.*