# DocCheck Flexikon vs eRef App

The clearest difference is rating: eRef App at 5.0 against DocCheck Flexikon's 4.3. DocCheck Flexikon's advantage is review sentiment (95% vs 74%). On price, ratings volume, update cadence and ads there is nothing between them.

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

eRef App holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 9 and 10 respectively. Written reviews complicate that: 95% of DocCheck Flexikon's written reviews are positive against 74% of eRef App's, so the app with the better star average is not the one people write more warmly about.

DocCheck Flexikon ships an update every 6 weeks, eRef App every 2 months. The most recent releases landed on September 25, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | DocCheck Flexikon | eRef App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (9 ratings)](https://appshunter.io/ios/app/doccheck-flexikon/id1029519711/reviews) | **[5.0 (10 ratings)](https://appshunter.io/ios/app/eref-app/id1080291629/reviews)** |
| Number of ratings | 9 | **10** |
| Positive reviews | **94.5% of reviews** | 73.9% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 2 months |
| Monetization | Free | Free |
| Size | 39 MB | 8 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 17+ |
| Developer | [DocCheck AG](https://appshunter.io/developer/1785591806) | [Georg Thieme Verlag KG](https://appshunter.io/developer/392272730) |

## What reviewers say

### DocCheck Flexikon

[App page](https://appshunter.io/ios/app/doccheck-flexikon/id1029519711)

Access a vast library of medical information, including definitions, symptoms, and therapies, through an extensive lexicon and encyclopedia. This app offers quick searches, offline access to over 80,000 articles, and comprehensive visualizations with 3D models and videos.

**Highlights:** Extensive medical lexicon and encyclopedia, Search definitions, symptoms, and therapies, Over 80,000 articles, images, and videos, Offline access to favorites, Regular content updates with peer review, 3D models, videos, and galleries for visualization

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

**In-app purchases:** none


### eRef App

[App page](https://appshunter.io/ios/app/eref-app/id1080291629)

Access a comprehensive medical knowledge portal offline on your smartphone or tablet. Research diagnoses, treatments, and read e-books and e-journals anywhere, anytime. A free trial account is available.

**Highlights:** Offline access to medical content, Read e-books and e-journals, Research differential diagnoses, Access personal journal subscriptions, Use cockpits for research

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is DocCheck Flexikon free?

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

### Is eRef App free?

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

### Which has better reviews, DocCheck Flexikon or eRef App?

eRef App is rated higher. DocCheck Flexikon averages 4.3 out of 5 from 9 ratings, while eRef App averages 5.0 from 10 ratings.

### Do DocCheck Flexikon or eRef App have ads?

Neither DocCheck Flexikon nor eRef App shows ads.

### Which is updated more often, DocCheck Flexikon or eRef App?

DocCheck Flexikon ships an update every 6 weeks, and eRef App every 2 months. Most recently, DocCheck Flexikon was updated on September 25, 2026 and eRef App on September 22, 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.*