# ClinicalKey AI vs E

The clearest difference is update cadence: E at every 11 days against ClinicalKey AI's monthly. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ClinicalKey AI ships an update monthly, E every 11 days. The most recent releases landed on October 11, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | ClinicalKey AI | E |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (12 ratings)](https://appshunter.io/ios/app/clinicalkey-ai/id6739815480/reviews)** | — |
| Number of ratings | **12** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 11 days** |
| Monetization | Free | — |
| Size | 27 MB | 42 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 17+ |
| Developer | [Elsevier Inc.](https://appshunter.io/developer/367031326) | [e-Vitals PLLC](https://appshunter.io/developer/1839862503) |

## What reviewers say

### ClinicalKey AI

[App page](https://appshunter.io/ios/app/clinicalkey-ai/id6739815480)

This app leverages generative AI to provide healthcare professionals with quick, evidence-based clinical insights. It allows for conversational search and offers transparent references for all AI-generated responses, supporting high-quality patient care and continuing education.

**Highlights:** AI-powered clinical insights, Conversational search, Transparent references, CME integration, Evidence-based medical content

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

**In-app purchases:** none


### E

[App page](https://appshunter.io/ios/app/e-vitals/id6752558130)

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

**In-app purchases:** none


## Frequently asked questions

### Is ClinicalKey AI free?

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

### Is E free?

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

### Do ClinicalKey AI or E have ads?

Neither ClinicalKey AI nor E shows ads.

### Which is updated more often, ClinicalKey AI or E?

ClinicalKey AI ships an update monthly, and E every 11 days. Most recently, ClinicalKey AI was updated on October 11, 2026 and E on October 24, 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.*