Preop Eval vs avoMD
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Preop Eval
This app provides guidance for evaluating and preparing adult patients for non-cardiac surgery. It includes algorithms and resources on medication management, cardiac event timing, and preoperative testing, serving as both a reference and a teaching tool for medical professionals.
- Cardiac evaluation algorithm
- Medication guidance (starting/stopping)
- Surgery timing after cardiac events
- Preoperative testing recommendations
- Review for students and residents
- Perioperative insulin management
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Preop Eval organizes and presents much of the guidance that one needs in order to evaluate and prepare adult patients for non-cardiac surgery. It is based upon the guidelines on this topic from the American College of Cardiology, the European Society of Anaesthesiology, the American Society of Anesthesiologists, the Institute for Clinical Systems Improvement, the American College of Chest Physicians, and more (full references in the app). The app contains 1 algorithm and 3 resources: the cardiac evaluation algorithm, guidance on starting and stopping key medications in the perioperative period, guidance on timing of surgery after cardiac events, and guidance on preoperative testing. It also contains a review of preoperative evaluation mainly for students and residents. The app addresses such common questions as: - who needs bloodwork before surgery? - who needs an EKG or a CXR? - how do I handle patients on warfarin, clopidogrel, and DOAC's? - which patients need adjustment of perioperative insulin and diabetic meds, and how? - which active cardiac conditions preclude surgery? - how long after MI or stent should a patient wait before surgery? - are there adjustments to make on psych meds, rheumatologic meds, ACE's and ARB's? This app is written and intended for practicing physicians like internists, family physicians, and hospitalists; for resident physician trainees; and for medical students. In addition to being a reference, the algorithm is written to be a teaching tool by not just delivering an answer, but instead walking a physician through the evaluation process so that one learns that process along the way. As an educator and clinician, I am interested in feedback and I would be grateful for guidance on improving the tool.
avoMD
This app offers interactive guidance for clinicians evaluating adult patients for noncardiac surgery. It incorporates co-morbidities, medications, and medical calculators based on established guidelines and literature reviews. Enhance your learning with evidence-based references and detailed explanations.
- Interactive patient evaluation
- Preoperative risk assessment
- Medical calculators (RCRI, MICA, etc.)
- Evidence-based references
- Literature review integration
- Co-morbidity and medication tracking
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avoMD: Preoperative Eval provides quick, interactive, and educational guidance to help clinicians evaluate and prepare adult patients for noncardiac surgery. The app is based primarily on the 2014 ACC/AHA Perioperative Guidelines but also includes additional comments from reviews of the literature up to September 2020. It was developed in conjunction with Dr. Steven Cohn, a leading expert in Perioperative Medicine. The app incorporates co-morbidities, patient medications, interactive medical calculators (like RCRI, MICA, ACS-SRC, DASI), and other information and tools to help clinicians assess the risk of surgery. avoMD provides links to the evidence-based references and best practices, as well as more detailed explanations on the recommendations, so that clinicians can enhance their learning experience. Dr. Steven Cohn is currently Professor Emeritus at the University of Miami Miller School of Medicine, having served as the Medical Director of the UHealth Preoperative Assessment Center (UPAC) and the Medical Consultation Services at the University of Miami Hospital and Jackson Memorial Hospital. He was the former Chief of the Division of General Internal Medicine at SUNY Downstate and the Director of the Preoperative Medical Consultation Clinic and Medical Consultation Service at Kings County Hospital Center. avoMD transforms clinical guidelines and content into interactive, next-gen apps. The team is led by physicians and informaticians from Columbia, Yale, and Harvard, while current partners include leading academic medical centers, urgent care providers and a growing number of residency programs and medical schools across the US. The company won the 2020 pitch competitions at Columbia Engineering and Penn Medicine and recently joined StartUp Health and 500 Startups. Interested in customizing avoMD for your department/institution? Contact info@avomd.io for more information.
Screenshots
Verdict
The clearest difference is in-app purchases: Preop Eval at none against avoMD's 4. avoMD's advantage is review sentiment (100% vs 67%) and update cadence (every 9 days vs every 6 months). On price, rating, 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
Both are free to download. avoMD sells 4 in-app purchases, starting at $9.99 per year. Preop Eval asks for nothing beyond the download.
On the App Store both sit at effectively the same score — 5.0 for Preop Eval against 5.0 for avoMD. That said, the two scores are not equally well evidenced: avoMD has 16 ratings behind it against 2, so its average is the more settled of the two. Written reviews are what separate them: 67% of Preop Eval's written reviews are positive against 100% of avoMD's.
Preop Eval ships an update every 6 months, avoMD every 9 days. Both last shipped on September 30, 2026.
| Parameter | Preop Eval | avoMD |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) | 5.0 (16 ratings) |
| Positive reviews | 66.7% of reviews | 100.0% of reviews — better |
| Number of ratings | 2 | 16 — better |
| Update frequency | Every 6 months | Every 9 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone | iPhone, iPod — better |
| Requires iOS | 16.6 | 13.0 — better |
| Further details — not scored | ||
| Size | 15 MB | 20 MB |
| Age rating | 17+ | 12+ |
| Developer | United Health Services, Inc. | avoMD, Inc |
Customer experience
Preop Eval
avoMD
In-app purchases
Preop Eval
No in-app purchases
avoMD
- 1 Year Assitance 1 month trial1 Month trial$9.991 Year
- 1 year assistance 3 month free3 Months trial$9.991 Year
- Institutional Plan$14.991 Year
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- 1 year assistance 6 month free6 Months trial$19.991 Year
Questions
Is Preop Eval free?
Is avoMD free?
Which has better reviews, Preop Eval or avoMD?
Do Preop Eval or avoMD have ads?
Which is updated more often, Preop Eval or avoMD?
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