# ECHO On vs ECGRef

The clearest difference is update cadence: ECHO On at weekly against ECGRef's every 2 weeks. ECHO On also leads on iOS requirement (15.6 vs 26.0). On price, rating, review sentiment and ratings volume there is nothing between them.

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

On the App Store both sit at effectively the same score — 4.9 for ECHO On against 4.9 for ECGRef. Both are backed by a comparable volume of ratings — 14 and 29 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

ECHO On ships an update weekly, ECGRef every 2 weeks. The most recent releases landed on October 13, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | ECHO On | ECGRef |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (14 ratings)](https://appshunter.io/ios/app/echo-on/id1519707786/reviews) | [4.9 (29 ratings)](https://appshunter.io/ios/app/ecgref/id6757675855/reviews) |
| Number of ratings | 14 | **29** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 2 weeks |
| Monetization | Free | Free |
| Size | 414 MB | 12 MB |
| Requires iOS | **15.6** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 17+ |
| Developer | [Robert Arrigo](https://appshunter.io/developer/1519707788) | [Rishi Kumar](https://appshunter.io/developer/1434016052) |

## What reviewers say

### ECHO On

[App page](https://appshunter.io/ios/app/echo-on/id1519707786)

This medical education app helps users learn Transesophageal Echocardiography with a question bank, cognitive aid, case log, and reference library. It provides guidance on performing and interpreting a standard 28-view exam, including anatomy, function, and Doppler interrogations.

**Highlights:** Transesophageal Echocardiography education, Enlarging question bank, Rescue TEE cognitive aid, Case Log system, Perioperative Quick Reference library, Offline echo loops, Pathology, technique, and normal loop examples

**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 ECHO On free?

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

### Is ECGRef free?

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

### Which has better reviews, ECHO On or ECGRef?

ECHO On and ECGRef are both rated 4.9 out of 5 on the App Store, from 14 and 29 ratings respectively.

### Do ECHO On or ECGRef have ads?

Neither ECHO On nor ECGRef shows ads.

### Which is updated more often, ECHO On or ECGRef?

ECHO On ships an update weekly, and ECGRef every 2 weeks. Most recently, ECHO On was updated on October 13, 2026 and ECGRef on October 10, 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.*