# Preop Eval vs PE & DVT dx tool

The clearest difference is review sentiment: Preop Eval at 67% against PE & DVT dx tool's 0%. Preop Eval also leads on rating (5.0 vs 4.3) and update cadence (every 6 months vs every 33 months). PE & DVT dx tool's advantage is iOS requirement (13.0 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 4.3. Both are backed by a comparable volume of ratings — 2 and 3 respectively. Written reviews point the same way: 67% of Preop Eval's written reviews are positive against 0% of PE & DVT dx tool's.

Preop Eval ships an update every 6 months, PE & DVT dx tool every 33 months. The most recent releases landed on October 16, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | Preop Eval | PE & DVT dx tool |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/preop-eval/id374154834/reviews)** | [4.3 (3 ratings)](https://appshunter.io/ios/app/pe-and-dvt-dx-tool/id415226337/reviews) |
| Number of ratings | 2 | **3** |
| Positive reviews | **66.7% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 months** | Every 33 months |
| Monetization | Free | Free |
| Size | 15 MB | 7 MB |
| Requires iOS | 16.6 | **13.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [United Health Services, Inc.](https://appshunter.io/developer/1451318916) | [Joshua D. steinberg](https://appshunter.io/developer/374154837) |

## 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


### PE & DVT dx tool

[App page](https://appshunter.io/ios/app/pe-and-dvt-dx-tool/id415226337)

This medical app provides point-of-care diagnostic algorithms for DVT and PE. It simplifies complex clinical scoring systems and guides clinicians through diagnostic approaches for these conditions, including special considerations for pregnant patients. It is designed for practicing physicians and trainees.

**Highlights:** DVT diagnosis algorithm, PE diagnosis algorithms (2), Clinical scoring systems, Diagnostic approach discussion, Hypercoagulable state workup, Pregnancy PE evaluation

**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 PE & DVT dx tool free?

PE & DVT dx tool is free to download, with no in-app purchases.

### Which has better reviews, Preop Eval or PE & DVT dx tool?

Preop Eval is rated higher. Preop Eval averages 5.0 out of 5 from 2 ratings, while PE & DVT dx tool averages 4.3 from 3 ratings.

### Do Preop Eval or PE & DVT dx tool have ads?

Neither Preop Eval nor PE & DVT dx tool shows ads.

### Which is updated more often, Preop Eval or PE & DVT dx tool?

Preop Eval ships an update every 6 months, and PE & DVT dx tool every 33 months. Most recently, Preop Eval was updated on October 16, 2026 and PE & DVT dx tool on October 23, 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.*