# Preop Eval vs MAPPP

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.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

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.

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

## The numbers

| Metric | Preop Eval | MAPPP |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/preop-eval/id374154834/reviews)** | [4.2 (5 ratings)](https://appshunter.io/ios/app/mappp/id986004720/reviews) |
| Number of ratings | 2 | **5** |
| Positive reviews | **66.7% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 4 months** |
| Monetization | Free | Free |
| Size | 15 MB | 54 MB |
| Requires iOS | 16.6 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [United Health Services, Inc.](https://appshunter.io/developer/1451318916) | [Island Peer Review Organization, Inc](https://appshunter.io/developer/986004719) |

## What reviewers say

### Preop Eval

[App page](https://appshunter.io/ios/app/preop-eval/id374154834)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### MAPPP

[App page](https://appshunter.io/ios/app/mappp/id986004720)

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:** macOS Compatibility

**In-app purchases:** none


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*