# ClinicalKey vs Endoscope App

The clearest difference is price: ClinicalKey at Free against Endoscope App's $3.99. Endoscope App's advantage is review sentiment (50% vs 9%) and update cadence (every 2 days vs every 5 weeks). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

ClinicalKey is free to download; Endoscope App costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ClinicalKey ships an update every 5 weeks, Endoscope App every 2 days. The most recent releases landed on October 29, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | ClinicalKey | Endoscope App |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Rating | — | **[4.6 (5 ratings)](https://appshunter.io/ios/app/endoscope-app/id6478836305/reviews)** |
| Number of ratings | — | **5** |
| Positive reviews | 8.8% of reviews | **50.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 2 days** |
| Monetization | Subscription | **Paid** |
| Best chart rank | — | **#106** |
| Size | 68 MB | 1 MB |
| Requires iOS | 15.5 | **15.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Elsevier Inc.](https://appshunter.io/developer/367031326) | [My Call Bag LLC](https://appshunter.io/developer/1243282862) |

## What reviewers say

### ClinicalKey

[App page](https://appshunter.io/ios/app/clinicalkey/id1041998175)

This app provides medical professionals with instant access to a vast library of clinical knowledge, including synoptic content and in-depth reference materials. It helps users stay updated on medical advancements, confirm diagnoses, and advance their research skills, all while offering CME/MOC/CE credits.

**Highlights:** Access to 30+ medical specialties, Synoptic content for quick answers, Full-text reference books and journals, Mobile-optimized medical calculators, Earn CME/MOC/CE credits, Intuitive search functionality

**In-app purchases:** none

**What reviewers like**

- 📚 High-quality, evidence-based clinical content
- 🎯 Intuitive interface and quick reference format
- 🔍 Similar functionality to website version
- 👍 Browse feature restoration appreciated by users

**What reviewers complain about**

- 🔓 Constant forced logout issues
- 🔐 Institutional login authentication failures
- ⏳ App freezes and perpetual loading screens
- 🚫 Missing textbook access in app vs website
- 📵 Frequent crashes and force closures

**Reported bugs**

- App stuck on loading screen after initial login
- Forced logout when closing or minimizing app
- Institutional login not working despite web access
- App crashes during search queries
- OpenAthens authentication failures

**Requested features**

- PDF download capability within the app
- Favorite/bookmark textbooks and articles
- Landscape mode support for iPad
- Find-on-page text search function
- Automatic session persistence and page memory


### Endoscope App

[App page](https://appshunter.io/ios/app/endoscope-app/id6478836305)

**Currently charting:** #106 Top Paid · Medical (US App Store)

This medical app turns your iPhone into an endoscopic camera for healthcare professionals. It offers features like patient watermarking, adjustable lighting, focus, and white balance for clear examinations. Images and videos are saved directly to your device's photo library.

**Highlights:** Patient data watermarking, Landscape mode optimization, Adjustable torch brightness, Adjustable exposure and focus, White balance control, Front-facing camera cycling, Pinch-to-zoom functionality

**In-app purchases:** none


## Frequently asked questions

### Is ClinicalKey free?

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

### Is Endoscope App free?

Endoscope App costs $3.99, with no in-app purchases.

### Do ClinicalKey or Endoscope App have ads?

Neither ClinicalKey nor Endoscope App shows ads.

### Which is updated more often, ClinicalKey or Endoscope App?

ClinicalKey ships an update every 5 weeks, and Endoscope App every 2 days. Most recently, ClinicalKey was updated on October 29, 2026 and Endoscope App on October 27, 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.*