# Preop Eval vs Anticoagulation Manager

The clearest difference is rating: Preop Eval at 5.0 against Anticoagulation Manager's 2.3. Preop Eval also leads on review sentiment (67% vs 50%) and update cadence (every 6 months vs every 13 months). Anticoagulation Manager's advantage is iOS requirement (12.0 vs 16.6). On price, ratings volume, ads and in-app purchases 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 2.3. Both are backed by a comparable volume of ratings — 2 and 4 respectively. Written reviews point the same way: 67% of Preop Eval's written reviews are positive against 50% of Anticoagulation Manager's.

Preop Eval ships an update every 6 months, Anticoagulation Manager every 13 months. The most recent releases landed on September 10, 2026 and September 2, 2026 respectively.

## The numbers

| Metric | Preop Eval | Anticoagulation Manager |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/preop-eval/id374154834/reviews)** | [2.3 (4 ratings)](https://appshunter.io/ios/app/anticoagulation-manager/id1349838916/reviews) |
| Number of ratings | 2 | **4** |
| Positive reviews | **66.7% of reviews** | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 months** | Every 13 months |
| Monetization | Free | Free |
| Size | 15 MB | 5 MB |
| Requires iOS | 16.6 | **12.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [United Health Services, Inc.](https://appshunter.io/developer/1451318916) | [Centers For Disease Control and Prevention](https://appshunter.io/developer/439259253) |

## 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


### Anticoagulation Manager

[App page](https://appshunter.io/ios/app/anticoagulation-manager/id1349838916)

This medical app assists clinicians in determining the correct type and dose of anticoagulant drugs. It provides evidence-based, accessible, and accurate information for prescribing anticoagulants to manage abnormal clotting states.

**Highlights:** Anticoagulant drug selection, Laboratory testing guidance, Evidence-based clinical information, Management of abnormal clotting states, Prescribing support for clinicians

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Preop Eval free?

Preop Eval is free to download, with no in-app purchases.

### Is Anticoagulation Manager free?

Anticoagulation Manager is free to download, with no in-app purchases.

### Which has better reviews, Preop Eval or Anticoagulation Manager?

Preop Eval is rated higher. Preop Eval averages 5.0 out of 5 from 2 ratings, while Anticoagulation Manager averages 2.3 from 4 ratings.

### Do Preop Eval or Anticoagulation Manager have ads?

Neither Preop Eval nor Anticoagulation Manager shows ads.

### Which is updated more often, Preop Eval or Anticoagulation Manager?

Preop Eval ships an update every 6 months, and Anticoagulation Manager every 13 months. Most recently, Preop Eval was updated on September 10, 2026 and Anticoagulation Manager on September 2, 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.*