# EchoSource vs PCI App

The clearest difference is review sentiment: PCI App at 100% against EchoSource's 50%. PCI App also leads on price (Free vs $1.99) and rating (5.0 vs 2.8). EchoSource's advantage is chart position (#50 vs unranked) and iOS requirement (12.0 vs 15.1). On ratings volume, ads, in-app purchases and device support there is nothing between them.

PCI App is free to download; EchoSource costs $1.99 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 2.8. Both are backed by a comparable volume of ratings — 6 and 5 respectively. Written reviews point the same way: 50% of EchoSource's written reviews are positive against 100% of PCI App's.

EchoSource ships an update every 18 months, PCI App every 2 months. The most recent releases landed on October 2, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | EchoSource | PCI App |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | [2.8 (6 ratings)](https://appshunter.io/ios/app/echosource/id532460804/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/pci-app/id1607148631/reviews)** |
| Number of ratings | **6** | 5 |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 18 months | **Every 2 months** |
| Monetization | Paid | **Free** |
| Best chart rank | **#50** | — |
| Size | 140 MB | 37 MB |
| Requires iOS | **12.0** | 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

### EchoSource

[App page](https://appshunter.io/ios/app/echosource/id532460804)

**Currently charting:** #50 Top Paid · Medical (US App Store)

This medical reference app offers a comprehensive guide to echocardiography, featuring a searchable index of specialized topics and a database of over 90 images and videos. It's designed for cardiologists and trainees to quickly reference diagnostic criteria and clinical disorders.

**Highlights:** Searchable index of specialized echocardiography topics, Database of over 90 figures, images, and videos, Detailed overview of clinical disorders, Evaluation using echocardiography, Reviews of pertinent medical literature, Reference for guideline-based diagnostic criteria

**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 EchoSource free?

EchoSource costs $1.99, with no in-app purchases.

### Is PCI App free?

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

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

PCI App is rated higher. EchoSource averages 2.8 out of 5 from 6 ratings, while PCI App averages 5.0 from 5 ratings.

### Do EchoSource or PCI App have ads?

Neither EchoSource nor PCI App shows ads.

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

EchoSource ships an update every 18 months, and PCI App every 2 months. Most recently, EchoSource was updated on October 2, 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.*