Comparison

Preop Eval vs MAPPP

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

Head to head
About

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.

Highlights
  • Cardiac evaluation algorithm
  • Medication guidance (starting/stopping)
  • Surgery timing after cardiac events
  • Preoperative testing recommendations
  • Review for students and residents
  • Perioperative insulin management
Features
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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.

About

MAPPP

This medical guide assists clinicians in managing patients on anticoagulation therapy undergoing surgery or invasive procedures. It helps evaluate bleeding and thrombosis risks, guiding decisions on interrupting anticoagulation and using bridging therapy.

Highlights
  • Evaluate bleeding and thrombosis risk
  • Guide anticoagulation interruption
  • Provide bridging therapy guidance
  • Detail drug dosing
  • Offer laboratory monitoring advice
  • Encourage clinician communication
Features
Read full description

Despite the considerable efficacy of antithrombotics and the increased number of oral anticoagulants now available, preventable bleeding and thrombotic events are still unacceptably common. While recently marketed agents require less laboratory monitoring, problems with the clinical management of anticoagulated patients persist, particularly in the peri-procedural period. Surgery and invasive medical interventions increase the risk of bleeding, while withholding anticoagulants increases the risk of thrombosis due to the underlying condition(s) for which anticoagulation was originally prescribed. The clinical team must therefore balance these competing risks and make educated decisions regarding the decision to interrupt oral anticoagulation for a medical procedure and, if interrupted, whether to "bridge" anticoagulation with injectable anticoagulants, such as low molecular weight heparin (LMWH) in warfarin treated patients. This guide is intended to: -Assist clinicians in the simultaneous evaluation of procedure-related bleeding risk and underlying risk of thrombosis -Guide decisions regarding the interruption of anticoagulation and the use of anticoagulant "bridging" -Provide detailed guidance for drug dosing and laboratory monitoring in the peri-procedural period -Encourage clear communication between clinicians involved in prescribing anticoagulants and performing invasive procedures This material was created by the multidisciplinary members of the Peri-Procedural Task Force of the New York State Anticoagulation Coalition and IPRO, the Medicare Quality Improvement Organization for New York State, under contract with the Centers for Medicare & Medicaid Services (CMS), an agency of the U.S. Department of Health and Human Services. The contents do not necessarily reflect CMS policy. 10SOW-NY-AIM-7.3-14-01

Screenshots

Preop Eval4 screens
MAPPP4 screens

Verdict

The call

The clearest difference is rating: Preop Eval at 5.0 against MAPPP's 4.2. Preop Eval also leads on review sentiment (67% vs 50%). MAPPP's advantage is iOS requirement (13.0 vs 16.6). On price, ratings volume, update cadence and ads 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Preop Eval holds the better App Store score, 5.0 against 4.2. Both are backed by a comparable volume of ratings — 2 and 5 respectively. Written reviews point the same way: 67% of Preop Eval's written reviews are positive against 50% of MAPPP's.

UpkeepUpdate frequency

Preop Eval ships an update every 6 months, MAPPP every 4 months. Both last shipped on September 10, 2026.

Scorecard3 real differences · 7 level
Preop Eval versus MAPPP: the parameters behind the verdict, then further details
ParameterPreop EvalMAPPP
PriceFreeFree
Rating5.0 (2 ratings) — better4.2 (5 ratings)
Positive reviews66.7% of reviews — better50.0% of reviews
Number of ratings25 — better
Update frequencyEvery 6 monthsEvery 4 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS16.613.0 — better
Further details — not scored
Size15 MB54 MB
Age rating17+17+
DeveloperUnited Health Services, Inc.Island Peer Review Organization, Inc

Customer experience

Preop Eval

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews12 reviews
Positive66.7%
Neutral8.3%
Negative25.0%

MAPPP

All ratings5 ratings
Positive80.0%
Neutral0.0%
Negative20.0%
Written reviews2 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

In-app purchases

None

Preop Eval

No in-app purchases

None

MAPPP

No in-app purchases

Questions

Is Preop Eval free?
Preop Eval is free to download, with no in-app purchases.
Is MAPPP free?
MAPPP is free to download, with no in-app purchases.
Which has better reviews, Preop Eval or MAPPP?
Preop Eval is rated higher. Preop Eval averages 5.0 out of 5 from 2 ratings, while MAPPP averages 4.2 from 5 ratings.
Do Preop Eval or MAPPP have ads?
Neither Preop Eval nor MAPPP shows ads.
Which is updated more often, Preop Eval or MAPPP?
Preop Eval ships an update every 6 months, and MAPPP every 4 months. Most recently, Preop Eval was updated on September 10, 2026 and MAPPP on September 10, 2026.

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