# STAT!Ref vs ClinicalKey AI

The clearest difference is review sentiment: ClinicalKey AI at 100% against STAT!Ref's 36%. ClinicalKey AI also leads on rating (5.0 vs 2.8) and update cadence (monthly vs every 3 months). On price, ratings volume, ads and in-app purchases 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 holds the better App Store score, 5.0 against 2.8. Both are backed by a comparable volume of ratings — 5 and 12 respectively. Written reviews point the same way: 36% of STAT!Ref's written reviews are positive against 100% of ClinicalKey AI's.

STAT!Ref ships an update every 3 months, ClinicalKey AI monthly. The most recent releases landed on October 1, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | STAT!Ref | ClinicalKey AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.8 (5 ratings)](https://appshunter.io/ios/app/statref/id474559171/reviews) | **[5.0 (12 ratings)](https://appshunter.io/ios/app/clinicalkey-ai/id6739815480/reviews)** |
| Number of ratings | 5 | **12** |
| Positive reviews | 36.4% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Monthly** |
| Monetization | Free | Free |
| Size | 8 MB | 27 MB |
| Requires iOS | 15.5 | **15.1** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 17+ | 17+ |
| Developer | [Teton Data Systems](https://appshunter.io/developer/474559174) | [Elsevier Inc.](https://appshunter.io/developer/367031326) |

## What reviewers say

### STAT!Ref

[App page](https://appshunter.io/ios/app/statref/id474559171)

Access a vast library of evidence-based medical resources on your mobile device. Search across hundreds of titles, bookmark key information, and define medical terms instantly. Features text-to-speech and news alerts for the latest healthcare updates.

**Highlights:** Cross-searchable medical resources, Bookmark specific paragraphs, Instant medical term definitions, Text-to-Speech functionality, Evidence Alerts and news feeds, Customizable content access

**Features:** macOS Compatibility

**In-app purchases:** none


### 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


## Frequently asked questions

### Is STAT!Ref free?

STAT!Ref is free to download, with no in-app purchases.

### Is ClinicalKey AI free?

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

### Which has better reviews, STAT!Ref or ClinicalKey AI?

ClinicalKey AI is rated higher. STAT!Ref averages 2.8 out of 5 from 5 ratings, while ClinicalKey AI averages 5.0 from 12 ratings.

### Do STAT!Ref or ClinicalKey AI have ads?

Neither STAT!Ref nor ClinicalKey AI shows ads.

### Which is updated more often, STAT!Ref or ClinicalKey AI?

STAT!Ref ships an update every 3 months, and ClinicalKey AI monthly. Most recently, STAT!Ref was updated on October 1, 2026 and ClinicalKey AI on October 11, 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.*