# Coexisting Diseases & Surgery vs ECGRef

The clearest difference is price: ECGRef at Free against Coexisting Diseases & Surgery's $99.99. ECGRef also leads on rating (4.9 vs 4.6) and review sentiment (100% vs 85%). Coexisting Diseases & Surgery's advantage is chart position (#79 vs unranked) and iOS requirement (13 vs 26.0). On ratings volume, update cadence, ads and in-app purchases there is nothing between them.

ECGRef is free to download; Coexisting Diseases & Surgery costs $99.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ECGRef holds the better App Store score, 4.9 against 4.6. Both are backed by a comparable volume of ratings — 29 and 31 respectively. Written reviews point the same way: 85% of Coexisting Diseases & Surgery's written reviews are positive against 100% of ECGRef's.

Coexisting Diseases & Surgery ships an update monthly, ECGRef every 3 weeks. Both last shipped on October 25, 2026.

## The numbers

| Metric | Coexisting Diseases & Surgery | ECGRef |
| --- | --- | --- |
| Price | $99.99 | **Free** |
| Rating | [4.6 (29 ratings)](https://appshunter.io/ios/app/coexisting-diseases-and-surgery/id1543711877/reviews) | **[4.9 (31 ratings)](https://appshunter.io/ios/app/ecgref/id6757675855/reviews)** |
| Number of ratings | 29 | **31** |
| Positive reviews | 84.6% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | Paid | **Free** |
| Best chart rank | **#79** | — |
| Size | 212 MB | 13 MB |
| Requires iOS | **13** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 17+ |
| Developer | [Vargo Anesthesia Inc](https://appshunter.io/developer/441512939) | [Rishi Kumar](https://appshunter.io/developer/1434016052) |

## What reviewers say

### Coexisting Diseases & Surgery

[App page](https://appshunter.io/ios/app/coexisting-diseases-and-surgery/id1543711877)

**Currently charting:** #79 Top Paid · Medical (US App Store)

This medical reference app provides detailed information on common and rare diseases, including their description, etiology, diagnosis, treatment, and prognosis. It also offers guidance on managing surgical patients with coexisting conditions.

**Highlights:** Disease descriptions, Etiology and onset, Diagnosis and pathophysiology, Treatment and prognosis, Perioperative management, Disease-related surgical concerns

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

**In-app purchases:** none


### ECGRef

[App page](https://appshunter.io/ios/app/ecgref/id6757675855)

An educational reference for interpreting electrocardiograms, this app covers electrophysiology, rhythm recognition, and common patterns. It aims to assist clinicians and students in accurate bedside ECG analysis.

**Highlights:** Electrophysiology concepts, Rhythm recognition, Clinically relevant patterns, Bedside ECG analysis support, Educational reference

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

**In-app purchases:** none


## Frequently asked questions

### Is Coexisting Diseases & Surgery free?

Coexisting Diseases & Surgery costs $99.99, with no in-app purchases.

### Is ECGRef free?

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

### Which has better reviews, Coexisting Diseases & Surgery or ECGRef?

ECGRef is rated higher. Coexisting Diseases & Surgery averages 4.6 out of 5 from 29 ratings, while ECGRef averages 4.9 from 31 ratings.

### Do Coexisting Diseases & Surgery or ECGRef have ads?

Neither Coexisting Diseases & Surgery nor ECGRef shows ads.

### Which is updated more often, Coexisting Diseases & Surgery or ECGRef?

Coexisting Diseases & Surgery ships an update monthly, and ECGRef every 3 weeks. Most recently, Coexisting Diseases & Surgery was updated on October 25, 2026 and ECGRef on October 25, 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.*