# OpenEvidence vs MDM Calc

The clearest difference is in-app purchases: OpenEvidence at none against MDM Calc's 1. OpenEvidence also leads on update cadence (weekly vs every 3 months) and chart position (#34 vs unranked). On price, ads and device support there is nothing between them.

Both are free to download. MDM Calc sells 1 one-off in-app purchase. OpenEvidence asks for nothing beyond the download.

OpenEvidence ships an update weekly, MDM Calc every 3 months. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | OpenEvidence | MDM Calc |
| --- | --- | --- |
| Price | Free | Free |
| 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** | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 3 months |
| Monetization | Free | — |
| Best chart rank | **#34** | — |
| Size | 95 MB | 6 MB |
| Requires iOS | **15.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | +17 | 4+ |
| Developer | [OpenEvidence Inc.](https://appshunter.io/developer/1761260627) | [DOMINIC JUAN LEBRON](https://appshunter.io/developer/1877381876) |

## What reviewers say

### OpenEvidence

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

**Currently charting:** #34 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


### MDM Calc

[App page](https://appshunter.io/ios/app/mdm-calc-em-optimizer/id6759225468)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Lifetime Unlock | $19.99 | one-time |


## Frequently asked questions

### Is OpenEvidence free?

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

### Is MDM Calc free?

MDM Calc is free to download, with in-app purchases available.

### Do OpenEvidence or MDM Calc have ads?

Neither OpenEvidence nor MDM Calc shows ads.

### Which is updated more often, OpenEvidence or MDM Calc?

OpenEvidence ships an update weekly, and MDM Calc every 3 months. Most recently, OpenEvidence was updated on October 28, 2026 and MDM Calc on October 25, 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.*