# OpenEvidence vs Periop Pacemaker Pro

The clearest difference is price: OpenEvidence at Free against Periop Pacemaker Pro's $9.99. OpenEvidence also leads on chart position (#31 vs #199). Periop Pacemaker Pro's advantage is iOS requirement (13.0 vs 15.1). On ads, in-app purchases and device support there is nothing between them.

OpenEvidence is free to download; Periop Pacemaker Pro costs $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | OpenEvidence | Periop Pacemaker Pro |
| --- | --- | --- |
| Price | **Free** | $9.99 |
| Rating | **[4.9 (12K ratings)](https://appshunter.io/ios/app/openevidence/id6612007783/reviews)** | — |
| Number of ratings | **12K** | — |
| Positive reviews | 81.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Weekly | — |
| Monetization | Free | — |
| Best chart rank | **#31** | #199 |
| Size | 95 MB | 42 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | +17 | 17+ |
| Developer | [OpenEvidence Inc.](https://appshunter.io/developer/1761260627) | [Rhythm Management, LLC](https://appshunter.io/developer/1761518402) |

## What reviewers say

### OpenEvidence

[App page](https://appshunter.io/ios/app/openevidence/id6612007783)

**Currently charting:** #31 Top Free · Medical (US App Store)

This app provides healthcare professionals with evidence-based clinical decision support and medical information. It acts as a search engine, sourcing answers from peer-reviewed literature and leading medical organizations to aid in high-stakes medical decisions at the point of care.

**Highlights:** Clinical decision support, Medical search engine, Sourced from peer-reviewed literature, FDA and CDC data integration, Partnerships with leading medical journals, Verified healthcare professional access

**Features:** Siri integration

**In-app purchases:** none

**What reviewers like**

- 🚀 Accurate and concise answers
- 💡 Provides references and sources
- 👍 Helpful for clinical practice
- 🚀 Efficient search and retrieval
- 👍 Invaluable quick reference tool

**What reviewers complain about**

- 🐛 App not working in latest update
- ⚠️ Requires specific prompts for complete information

**Reported bugs**

- App not working in latest update

**Requested features**

- Availability on MacBook
- Integration with clinical workflows and EMRs


### Periop Pacemaker Pro

[App page](https://appshunter.io/ios/app/periop-pacemaker-pro/id6756777449)

**Currently charting:** #199 Top Paid · Medical (US App Store)

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

**In-app purchases:** none


## Frequently asked questions

### Is OpenEvidence free?

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

### Is Periop Pacemaker Pro free?

Periop Pacemaker Pro costs $9.99, with no in-app purchases.

### Do OpenEvidence or Periop Pacemaker Pro have ads?

Neither OpenEvidence nor Periop Pacemaker Pro shows ads.

### Which is more popular, OpenEvidence or Periop Pacemaker Pro?

OpenEvidence currently peaks at #31 in the App Store charts, and Periop Pacemaker Pro at #199. Chart position reflects recent download velocity rather than total install base.

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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.*