# Perioperative risk vs PreOp

The clearest difference is price: PreOp at Free against Perioperative risk's $4.99. PreOp also leads on in-app purchases (none vs 1) and iOS requirement (13.0 vs 15.6). Perioperative risk's advantage is device support.

PreOp is free to download; Perioperative risk costs $4.99 up front. Perioperative risk sells 1 one-off in-app purchase. PreOp asks for nothing beyond the download.

## The numbers

| Metric | Perioperative risk | PreOp |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | — |
| Update frequency | Every 2 months | — |
| Monetization | Paid | — |
| Size | 9 MB | 36 MB |
| Requires iOS | 15.6 | **13.0** |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | +17 | 17+ |
| Developer | [Bruno Caramelli](https://appshunter.io/developer/1141478682) | [Simonini Software](https://appshunter.io/developer/935985232) |

## What reviewers say

### Perioperative risk

[App page](https://appshunter.io/ios/app/perioperative-risk/id1096306969)

This medical app assists physicians with cardiovascular risk assessment and prevention in patients undergoing non-cardiac surgery. It estimates complication risks and offers evidence-based tips to mitigate them through a visual flowchart.

**Highlights:** Cardiovascular risk estimation, Complication prevention tips, Pipeline flowchart guidance, Evidence-based recommendations, Bedside clinical tool

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Perioperative Risk - Patient Record | $2.99 | one-time |


### PreOp

[App page](https://appshunter.io/ios/app/preop/id6479363746)

**In-app purchases:** none


## Frequently asked questions

### Is Perioperative risk free?

Perioperative risk costs $4.99, and also offers in-app purchases.

### Is PreOp free?

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

---

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