# Ether vs ECHO On

The clearest difference is review sentiment: ECHO On at 100% against Ether's 40%. ECHO On also leads on update cadence (weekly vs every 6 weeks). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Ether ships an update every 6 weeks, ECHO On weekly. The most recent releases landed on September 15, 2026 and September 10, 2026 respectively.

## The numbers

| Metric | Ether | ECHO On |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.9 (14 ratings)](https://appshunter.io/ios/app/echo-on/id1519707786/reviews)** |
| Number of ratings | — | **14** |
| Positive reviews | 40.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Weekly** |
| Monetization | Free | Free |
| Size | 4 MB | 414 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Stanford Anesthesia Informatics And Media Lab](https://appshunter.io/developer/360941478) | [Robert Arrigo](https://appshunter.io/developer/1519707788) |

## What reviewers say

### Ether

[App page](https://appshunter.io/ios/app/ether/id360941475)

This medical app provides anesthesiologists with easy access to essential practice information. It offers features like telephone directories and physician contact information, with some content restricted to authenticated Stanford affiliates.

**Highlights:** Anesthesiology practice information, Stanford clinical facility directories, Physician contact information, Built-in text paging, Access for Stanford affiliates

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Ether free?

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

### Is ECHO On free?

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

### Do Ether or ECHO On have ads?

Neither Ether nor ECHO On shows ads.

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

Ether ships an update every 6 weeks, and ECHO On weekly. Most recently, Ether was updated on September 15, 2026 and ECHO On on September 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.*