# ImmGen vs Read by QxMD

The clearest difference is ads: ImmGen at none against Read by QxMD's shown. ImmGen also leads on monetization model (free vs free with in-app purchases) and iOS requirement (13.0 vs 17.6). Read by QxMD's advantage is update cadence (monthly vs every 7 months) and ratings volume (6K vs 13). On price, rating, review sentiment 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.

ImmGen holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Read by QxMD has 6K ratings behind it against 13, so its average is the more settled of the two. Written reviews complicate that: 83% of ImmGen's written reviews are positive against 89% of Read by QxMD's, so the app with the better star average is not the one people write more warmly about.

ImmGen ships an update every 7 months, Read by QxMD monthly. The most recent releases landed on October 8, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | ImmGen | Read by QxMD |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (13 ratings)](https://appshunter.io/ios/app/immgen/id378703882/reviews)** | [4.8 (6K ratings)](https://appshunter.io/ios/app/read-by-qxmd/id574041839/reviews) |
| Number of ratings | 13 | **6K** |
| Positive reviews | 83.3% of reviews | **89.0% of reviews** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 7 months | **Monthly** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 74 MB | 205 MB |
| Requires iOS | **13.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 17+ |
| Developer | [Christophe Benoist](https://appshunter.io/developer/378703885) | [WebMD](https://appshunter.io/developer/295076332) |

## What reviewers say

### ImmGen

[App page](https://appshunter.io/ios/app/immgen/id378703882)

Explore gene expression data across various immune cell types in mice and humans. Visualize expression levels with interactive heatmaps and bar charts. Discover correlated genes to understand cellular relationships.

**Highlights:** Gene expression heatmap barcodes, Visualize expression in cell lineages, Toggle between mouse/human datasets, Bar chart visualization, Gene constellation view, View correlated genes

**Features:** macOS Compatibility

**In-app purchases:** none


### Read by QxMD

[App page](https://appshunter.io/ios/app/read-by-qxmd/id574041839)

Access and organize the latest medical research and topic reviews in a personalized digital journal. Stay updated with new scientific findings and easily retrieve full-text PDFs from PubMed and other sources.

**Highlights:** Personalized digital medical journal, Access latest medical research, Read topic reviews, Search PubMed, Full-text PDF access, Organize article collection

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Efficient access to latest research
- 👍 Customizable journal and keyword tracking
- 🔒 Institutional access integration
- 💡 Convenient PDF downloads
- 👍 Helpful for staying up-to-date

**What reviewers complain about**

- 🐛 Frequent crashes and bugs
- 🔒 Institutional access issues
- 💻 Lack of desktop/web version
- 🔍 Limited search and filtering options
- 📤 Difficulty sharing articles

**Reported bugs**

- Login and authentication problems
- Inconsistent app performance after updates
- Inability to access full-text articles
- Syncing issues between devices
- Unreliable article refresh functionality

**Requested features**

- Dark mode option
- Ability to annotate and highlight PDFs
- Improved article organization and collections
- Integration with reference managers (e.g. Zotero, Mendeley)
- Enhanced search and filtering capabilities


## Frequently asked questions

### Is ImmGen free?

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

### Is Read by QxMD free?

Read by QxMD is free to download, with no in-app purchases.

### Which has better reviews, ImmGen or Read by QxMD?

ImmGen is rated higher. ImmGen averages 5.0 out of 5 from 13 ratings, while Read by QxMD averages 4.8 from 6K ratings.

### Do ImmGen or Read by QxMD have ads?

Read by QxMD shows ads; ImmGen does not.

### Which is updated more often, ImmGen or Read by QxMD?

ImmGen ships an update every 7 months, and Read by QxMD monthly. Most recently, ImmGen was updated on October 8, 2026 and Read by QxMD on October 21, 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.*