# ImmGen vs IDSA Practice Guidelines

ImmGen and IDSA Practice Guidelines both sit at 5.0 stars, but that hides the real split: 83% of ImmGen's written reviews are positive against 0% of IDSA Practice Guidelines's. IDSA Practice Guidelines's advantage is ratings volume (559 vs 13). On price, rating, 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.

ImmGen holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: IDSA Practice Guidelines has 559 ratings behind it against 13, so its average is the more settled of the two. Written reviews point the same way: 83% of ImmGen's written reviews are positive against 0% of IDSA Practice Guidelines's.

Both ship on a similar rhythm, roughly every 7 months. The most recent releases landed on September 21, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | ImmGen | IDSA Practice Guidelines |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (13 ratings)](https://appshunter.io/ios/app/immgen/id378703882/reviews)** | [4.8 (559 ratings)](https://appshunter.io/ios/app/idsa-practice-guidelines/id1478886375/reviews) |
| Number of ratings | 13 | **559** |
| Positive reviews | **83.3% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | Every 7 months |
| Monetization | Free | Free |
| Size | 74 MB | 105 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 17+ |
| Developer | [Christophe Benoist](https://appshunter.io/developer/378703885) | [Infectious Diseases Society of America](https://appshunter.io/developer/1477996603) |

## 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


### IDSA Practice Guidelines

[App page](https://appshunter.io/ios/app/idsa-practice-guidelines/id1478886375)

Access and stay updated with the latest clinical guidelines from the Infectious Diseases Society of America. This app offers interactive tools, search functionality, and the ability to bookmark key information and take notes for healthcare professionals.

**Highlights:** Access clinical guidelines, Interactive tools, Search guidelines, Bookmark pages, Take notes

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ImmGen free?

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

### Is IDSA Practice Guidelines free?

IDSA Practice Guidelines is free to download, with no in-app purchases.

### Which has better reviews, ImmGen or IDSA Practice Guidelines?

ImmGen is rated higher. ImmGen averages 5.0 out of 5 from 13 ratings, while IDSA Practice Guidelines averages 4.8 from 559 ratings.

### Do ImmGen or IDSA Practice Guidelines have ads?

Neither ImmGen nor IDSA Practice Guidelines shows ads.

### Which is updated more often, ImmGen or IDSA Practice Guidelines?

ImmGen ships an update every 7 months, and IDSA Practice Guidelines every 7 months. Most recently, ImmGen was updated on September 21, 2026 and IDSA Practice Guidelines on September 29, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*