# PreMedicus® ER vs CorePendium

The clearest difference is price: CorePendium at Free against PreMedicus® ER's $4.99. CorePendium also leads on update cadence (monthly vs every 45 months) and ratings volume (1.4K vs 1). PreMedicus® ER's advantage is iOS requirement (13.0 vs 15.1). On rating, ads, in-app purchases and device support there is nothing between them.

CorePendium is free to download; PreMedicus® ER costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for PreMedicus® ER against 4.9 for CorePendium. That said, the two scores are not equally well evidenced: CorePendium has 1.4K ratings behind it against 1, so its average is the more settled of the two.

PreMedicus® ER ships an update every 45 months, CorePendium monthly. The most recent releases landed on June 12, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | PreMedicus® ER | CorePendium |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/premedicus-er/id1505306194/reviews)** | [4.9 (1.4K ratings)](https://appshunter.io/ios/app/corependium/id1581291387/reviews) |
| Number of ratings | 1 | **1.4K** |
| Positive reviews | — | 66.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 45 months | **Monthly** |
| Monetization | Paid | **Freemium** |
| Size | 68 MB | 49 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [PreMedicus LLC](https://appshunter.io/developer/1451611563) | [EM:RAP, Inc.](https://appshunter.io/developer/804248263) |

## What reviewers say

### PreMedicus® ER

[App page](https://appshunter.io/ios/app/premedicus-er/id1505306194)

This digital health assistant guides you through symptom assessment with everyday language, providing potential diagnoses and personalized advice. It generates detailed medical reports for your doctor and offers GPS directions to nearby healthcare providers.

**Highlights:** Symptom assessment in everyday language, Personalized advice and potential diagnoses, Generates medical and non-medical reports, GPS guidance to healthcare providers, Secure HIPAA-compliant data storage, Two-factor authentication

**Features:** macOS Compatibility

**In-app purchases:** none


### CorePendium

[App page](https://appshunter.io/ios/app/corependium/id1581291387)

This app provides a comprehensive, continuously updated, and peer-reviewed clinical reference for Emergency and Urgent Care Medicine. It features integrated multimedia, offline access, intuitive navigation, and medical calculators, making it an essential tool for medical professionals on the go.

**Highlights:** Expert-backed, continuously revised content, Integrated media library (ECGs, X-rays, videos, audio), Offline access to all content, Intuitive navigation with Rapid Access and Deep Dive sections, Integrated medical calculators, Links to EM:RAP knowledge base content

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Great resource
- 👍 Excellent and usable app
- 👍 Terrific point of care resource
- 👍 Invaluable for EM residents

**What reviewers complain about**

- 🔍 Lacking search functionality
- 🐛 Crashes frequently
- 🔍 Poor indexing and content organization

**Reported bugs**

- Crashes on launch
- Compatibility issues with older devices

**Requested features**

- iPad version
- Ability to track progress and bookmark content
- Video playback controls (speed, rewind)


## Frequently asked questions

### Is PreMedicus® ER free?

PreMedicus® ER costs $4.99, with no in-app purchases.

### Is CorePendium free?

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

### Which has better reviews, PreMedicus® ER or CorePendium?

PreMedicus® ER is rated higher. PreMedicus® ER averages 5.0 out of 5 from 1 ratings, while CorePendium averages 4.9 from 1.4K ratings.

### Do PreMedicus® ER or CorePendium have ads?

Neither PreMedicus® ER nor CorePendium shows ads.

### Which is updated more often, PreMedicus® ER or CorePendium?

PreMedicus® ER ships an update every 45 months, and CorePendium monthly. Most recently, PreMedicus® ER was updated on June 12, 2026 and CorePendium on September 28, 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.*