# Preop Eval vs Pneumonia Guide

The clearest difference is update cadence: Pneumonia Guide at every 2 months against Preop Eval's every 6 months. Pneumonia Guide also leads on review sentiment (80% vs 67%) and iOS requirement (13.0 vs 16.6). On price, ads, in-app purchases and monetization model 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 ships an update every 6 months, Pneumonia Guide every 2 months. The most recent releases landed on September 30, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Preop Eval | Pneumonia Guide |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/preop-eval/id374154834/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 66.7% of reviews | **80.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 15 MB | 4 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


### Pneumonia Guide

[App page](https://appshunter.io/ios/app/pneumonia-guide/id406419856)

This app provides organized guidance on managing community-acquired and hospital-acquired pneumonia based on established clinical guidelines. It answers common questions for healthcare professionals regarding patient hospitalization, antibiotic selection, treatment duration, and ICU admission criteria.

**Highlights:** Organized clinical guidelines, Management of CAP and HAP, Antibiotic selection advice, Hospitalization criteria, ICU admission guidance, Pediatric pneumonia treatment

**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 Pneumonia Guide free?

Pneumonia Guide is free to download, with no in-app purchases.

### Do Preop Eval or Pneumonia Guide have ads?

Neither Preop Eval nor Pneumonia Guide shows ads.

### Which is updated more often, Preop Eval or Pneumonia Guide?

Preop Eval ships an update every 6 months, and Pneumonia Guide every 2 months. Most recently, Preop Eval was updated on September 30, 2026 and Pneumonia Guide on October 7, 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.*