Ether vs ECHO On
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Ether
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.
- Anesthesiology practice information
- Stanford clinical facility directories
- Physician contact information
- Built-in text paging
- Access for Stanford affiliates
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Ether is an application designed by the Stanford Anesthesia Informatics and Media (AIM) Lab to support the work, education and training of anesthesiologists at the Stanford University School of Medicine. The application allows easy access to information relevant to the practice of anesthesiology. Please note access to some content is restricted to Stanford-authenticated affiliates. Telephone directories to Stanford clinical facilities and a directory of physician contact information and built-in text paging are also available to Stanford-authenticated affiliates. The application is primarily designed for affiliates of the Stanford University School of Medicine. For more information about the Stanford AIM lab and our other projects, please visit our website at http://aim.stanford.edu.
ECHO On
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.
- 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
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ECHO On is a free medical education resource for learning Transesophageal Echocardiography including a free, enlarging question bank, a Rescue TEE cognitive aid, a Case Log system for submission to the NBE, and a growing perioperative Quick Reference library with offline echo loops that work even in the OR without internet access, and includes pathology examples, techniques, and normal loops of the heart. ECHO On will walk you through an entire standard 28 view exam teaching you the anatomy, function and Doppler interrogations you should perform at each view, and how to interpret them. ECHO On is and will remain free, and the best way you can contribute is to submit boards-style questions or echo stills and echo loops to help grow the QBank, Quick Reference and Pathology libraries. Disclaimer: This app was written to provide an accessible perioperative tool for residents and fellows learning TEE in the cardiac OR and ICU, and for generalist anesthesiologists looking to refresh their knowledge of TEE. It is not meant for patients to self-diagnose. It is not meant to be a definitive reference. Despite my best efforts, there may be errors or inaccuracies in this app, so please do not use it for medical decision making, as doing so may lead you misdiagnose or seriously harm your patient. If you are not a qualified medical doctor, please see a qualified medical doctor before making any medical decisions, including those based on echocardiograms.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | Ether | ECHO On |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.9 (14 ratings) — better |
| Positive reviews | 40.0% of reviews | 100.0% of reviews — better |
| Number of ratings | — | 14 — better |
| Update frequency | Every 6 weeks | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad, iPod — better |
| Requires iOS | 15.6 | 15.6 |
| Further details — not scored | ||
| Size | 4 MB | 414 MB |
| Age rating | 4+ | 12+ |
| Developer | Stanford Anesthesia Informatics And Media Lab | Robert Arrigo |
Customer experience
Ether
ECHO On
In-app purchases
Ether
No in-app purchases
ECHO On
No in-app purchases









