Comparison

Ether vs Periop Pacemaker

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Anesthesiology practice information
  • Stanford clinical facility directories
  • Physician contact information
  • Built-in text paging
  • Access for Stanford affiliates
Features
Read full description

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.

About

Periop Pacemaker

This app provides medical professionals with a decision algorithm for managing surgical patients with implantable defibrillators or pacemakers. It is based on guidelines endorsed by the Heart Rhythm Society and updated annually by an expert committee.

Highlights
  • Decision algorithm for pacemaker/defibrillator management
  • Endorsed by Heart Rhythm Society
  • Based on ASA Perioperative Cardiac Implantable Electronic Device Management Aid
  • Annual expert committee updates
  • Designed for medical professionals
Features
Read full description

Periop Pacemaker is a smartphone app that assists medical professionals who take care of surgical patients that have implantable defibrillators or pacemakers. The decision algorithm is endorsed by the Heart Rhythm Society and is based on the American Society of Anesthesiologists Perioperative Cardiac Implantable Electronic Device Management Aid. As device technology evolves, an expert committee of anesthesiologists, cardiologists, and device representatives will meet annually to keep information up-to-date. Disclaimer: ASA Pacemaker is designed for use by medical professionals only. Accessing the app content requires either a one-time payment of $7.99 USD or an annual subscription payment of $2.99 USD. A 30-day free trial is available under the annual subscription plan.

Screenshots

Ether3 screens
Periop Pacemaker4 screens

Verdict

The call

The clearest difference is review sentiment: Periop Pacemaker at 100% against Ether's 40%. Periop Pacemaker also leads on iOS requirement (13.0 vs 15.6). Ether's advantage is in-app purchases (none vs 2). On price, update cadence, ads and device support 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Periop Pacemaker sells 2 in-app purchases, starting at $2.99 per year. Ether asks for nothing beyond the download.

UpkeepUpdate frequency

Ether ships an update every 6 weeks, Periop Pacemaker every 2 months. The most recent releases landed on October 3, 2026 and September 27, 2026 respectively.

Scorecard4 real differences · 6 level
Ether versus Periop Pacemaker: the parameters behind the verdict, then further details
ParameterEtherPeriop Pacemaker
PriceFreeFree
Rating—5.0 (8 ratings) — better
Positive reviews40.0% of reviews100.0% of reviews — better
Number of ratings—8 — better
Update frequencyEvery 6 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPodiPhone, iPod
Requires iOS15.613.0 — better
Further details — not scored
Size4 MB43 MB
Age rating4+17+
DeveloperStanford Anesthesia Informatics And Media LabRhythm Management, LLC

Customer experience

Ether

Written reviews5 reviews
Positive40.0%
Neutral0.0%
Negative60.0%

Periop Pacemaker

All ratings8 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews5 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Ether

No in-app purchases

2 purchases

Periop Pacemaker

Subscriptions1
  • PERIOP PACEMAKER ANNUAL FEE1 Month trial$2.991 Year
One-time1
  • Periop Pacemaker$7.99

Questions

Is Ether free?
Ether is free to download, with no in-app purchases.
Is Periop Pacemaker free?
Periop Pacemaker is free to download, with in-app purchases available.
Do Ether or Periop Pacemaker have ads?
Neither Ether nor Periop Pacemaker shows ads.
Which is updated more often, Ether or Periop Pacemaker?
Ether ships an update every 6 weeks, and Periop Pacemaker every 2 months. Most recently, Ether was updated on October 3, 2026 and Periop Pacemaker on September 27, 2026.

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