Comparison

Coexisting Diseases & Surgery 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

Coexisting Diseases & Surgery

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
Currently charting
Read full description

The Vargo Coexisting Diseases & Surgery App is a clinician-built resource designed to help anesthesia providers tailor anesthetic management to the patient’s underlying comorbidities and surgical considerations. Built from years of clinical experience, the app focuses on how coexisting diseases directly impact perioperative decision-making. Organized by major clinical systems, the app allows for rapid access to condition-specific anesthesia considerations—whether preparing for a case or managing complex patients in active clinical settings. The app is structured by major organ systems and disease categories, providing focused anesthesia guidance across a wide range of conditions: - Brain / Neuro Neurologic conditions and their impact on anesthesia management - Cardiac Hemodynamic considerations, cardiac pathology, and perioperative risk - Endocrine Diabetes, adrenal disorders, thyroid disease, and metabolic implications - Gastrointestinal GI disorders affecting anesthesia planning and intraoperative care - Hematologic Disorders Coagulopathies, anemia, and blood management considerations - Liver & Biliary Tract Hepatic dysfunction and implications for drug metabolism and coagulation - Pediatrics & OB/GYN Specialized considerations for pediatric and obstetric populations - Pulmonary Respiratory disease management and ventilation strategies - Renal Diseases Kidney dysfunction and fluid, electrolyte, and drug considerations - Congenital Heart Defects Structural cardiac conditions and tailored anesthesia approaches The app is built to provide clear, focused guidance that directly applies to clinical practice: Organized for rapid navigation by system and condition Emphasis on how disease states influence anesthetic planning Practical, case-driven considerations rather than general summaries This is a tool designed to help providers quickly answer the question: “How does this patient’s condition change my anesthetic plan?” The Vargo Coexisting Diseases & Surgery App is developed by experienced anesthesia providers who specialize in managing complex cases across a wide range of disease states. The content reflects real clinical decision-making and is continuously refined to remain relevant and practical. All future updates and additions are included with a one-time purchase. There are no subscriptions or recurring fees. Designed for every level of the anesthesia care team. Not just what to do—but the physiology driving every decision. Disclaimer: The Vargo Anesthesia Apps are intended for educational and clinical reference purposes only. These applications are designed to support clinical decision-making by trained healthcare professionals and are not a substitute for independent medical judgment, institutional policies, or current standards of care. Users are responsible for independently verifying all information, including drug dosages, calculations, and patient-specific considerations.

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

Coexisting Diseases & Surgery4 screens
Periop Pacemaker4 screens

Verdict

The call

The clearest difference is price: Periop Pacemaker at Free against Coexisting Diseases & Surgery's $99.99. Periop Pacemaker also leads on rating (5.0 vs 4.6) and review sentiment (100% vs 85%). Coexisting Diseases & Surgery's advantage is in-app purchases (none vs 2) and chart position (#126 vs unranked). On update cadence, ads, device support and iOS requirement 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

Periop Pacemaker is free to download; Coexisting Diseases & Surgery costs $99.99 up front. Periop Pacemaker sells 2 in-app purchases, starting at $2.99 per year. Coexisting Diseases & Surgery asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Periop Pacemaker holds the better App Store score, 5.0 against 4.6. Both are backed by a comparable volume of ratings — 29 and 8 respectively. Written reviews point the same way: 85% of Coexisting Diseases & Surgery's written reviews are positive against 100% of Periop Pacemaker's.

UpkeepUpdate frequency

Coexisting Diseases & Surgery ships an update monthly, Periop Pacemaker every 2 months. The most recent releases landed on September 11, 2026 and September 9, 2026 respectively.

Scorecard7 real differences · 4 level
Coexisting Diseases & Surgery versus Periop Pacemaker: the parameters behind the verdict, then further details
ParameterCoexisting Diseases & SurgeryPeriop Pacemaker
Price$99.99Free — better
Rating4.6 (29 ratings)5.0 (8 ratings) — better
Positive reviews84.6% of reviews100.0% of reviews — better
Number of ratings29 — better8
Update frequencyMonthly — betterEvery 2 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
Best chart rank#126 — better—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS1313.0
Further details — not scored
Size212 MB43 MB
Age rating17+17+
DeveloperVargo Anesthesia IncRhythm Management, LLC

Customer experience

Coexisting Diseases & Surgery

All ratings29 ratings
Positive86.2%
Neutral0.0%
Negative13.8%
Written reviews13 reviews
Positive84.6%
Neutral0.0%
Negative15.4%

Periop Pacemaker

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

In-app purchases

None

Coexisting Diseases & Surgery

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 Coexisting Diseases & Surgery free?
Coexisting Diseases & Surgery costs $99.99, with no in-app purchases.
Is Periop Pacemaker free?
Periop Pacemaker is free to download, with in-app purchases available.
Which has better reviews, Coexisting Diseases & Surgery or Periop Pacemaker?
Periop Pacemaker is rated higher. Coexisting Diseases & Surgery averages 4.6 out of 5 from 29 ratings, while Periop Pacemaker averages 5.0 from 8 ratings.
Do Coexisting Diseases & Surgery or Periop Pacemaker have ads?
Neither Coexisting Diseases & Surgery nor Periop Pacemaker shows ads.
Which is updated more often, Coexisting Diseases & Surgery or Periop Pacemaker?
Coexisting Diseases & Surgery ships an update monthly, and Periop Pacemaker every 2 months. Most recently, Coexisting Diseases & Surgery was updated on September 11, 2026 and Periop Pacemaker on September 9, 2026.

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