# ImmGen vs USMLE

The clearest difference is in-app purchases: ImmGen at none against USMLE's 1. ImmGen also leads on review sentiment (83% vs 49%) and rating (5.0 vs 4.7). USMLE's advantage is ratings volume (5K vs 13) and update cadence (every 6 weeks vs every 7 months). On price, ads and device support there is nothing between them.

Both are free to download. USMLE sells 1 in-app purchase, starting at $49.99 per month. ImmGen asks for nothing beyond the download.

ImmGen holds the better App Store score, 5.0 against 4.7. That said, the two scores are not equally well evidenced: USMLE has 5K 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 49% of USMLE's.

ImmGen ships an update every 7 months, USMLE every 6 weeks. The most recent releases landed on September 21, 2026 and September 25, 2026 respectively.

## The numbers

| Metric | ImmGen | USMLE |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (13 ratings)](https://appshunter.io/ios/app/immgen/id378703882/reviews)** | [4.7 (5K ratings)](https://appshunter.io/ios/app/usmle-rx/id1222119266/reviews) |
| Number of ratings | 13 | **5K** |
| Positive reviews | **83.3% of reviews** | 48.9% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 6 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Best chart rank | — | **#141** |
| Size | 74 MB | 40 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 17+ |
| Developer | [Christophe Benoist](https://appshunter.io/developer/378703885) | [MedIQ Learning, LLC](https://appshunter.io/developer/344457828) |

## 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


### USMLE

[App page](https://appshunter.io/ios/app/usmle-rx/id1222119266)

**Currently charting:** #141 Top Grossing · Medical (US App Store)

Master medical school and the USMLE with a comprehensive resource app. Access board-style questions, interactive learning modules, flashcards, and videos. Study anytime, anywhere with cloud syncing and personalized study tools.

**Highlights:** Thousands of USMLE board-style questions, Nearly 800 eLearning modules, Over 14,000 flashcards, Over 80 hours of high-yield videos, Cloud syncing across devices, Spaced repetition study tool

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| RX360+ | $49.99 | per month |


## Frequently asked questions

### Is ImmGen free?

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

### Is USMLE free?

USMLE is free to download, with in-app purchases available.

### Which has better reviews, ImmGen or USMLE?

ImmGen is rated higher. ImmGen averages 5.0 out of 5 from 13 ratings, while USMLE averages 4.7 from 5K ratings.

### Do ImmGen or USMLE have ads?

Neither ImmGen nor USMLE shows ads.

### Which is updated more often, ImmGen or USMLE?

ImmGen ships an update every 7 months, and USMLE every 6 weeks. Most recently, ImmGen was updated on September 21, 2026 and USMLE on September 25, 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.*