# USMLE Step2 vs Quantum Cats Dance

The clearest difference is price: Quantum Cats Dance at Free against USMLE Step2's $3.99. Quantum Cats Dance also leads on update cadence (daily vs every 87 months). USMLE Step2's advantage is device support (3 vs 1) and iOS requirement (12.4 vs 18.2). On ads and in-app purchases there is nothing between them.

Quantum Cats Dance is free to download; USMLE Step2 costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

USMLE Step2 ships an update every 87 months, Quantum Cats Dance daily. The most recent releases landed on October 15, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | USMLE Step2 | Quantum Cats Dance |
| --- | --- | --- |
| Price | $3.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 87 months | **Daily** |
| Size | 12 MB | 4 MB |
| Requires iOS | **12.4** | 18.2 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Tourkia CHIHI](https://appshunter.io/developer/1105976811) | [Eiki Sato](https://appshunter.io/developer/1018719847) |

## What reviewers say

### USMLE Step2

[App page](https://appshunter.io/ios/app/usmle-step2-exam-prep-app/id1215005191)

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

**In-app purchases:** none


### Quantum Cats Dance

[App page](https://appshunter.io/ios/app/quantum-cats-dance/id6757285319)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is USMLE Step2 free?

USMLE Step2 costs $3.99, with no in-app purchases.

### Is Quantum Cats Dance free?

Quantum Cats Dance is free to download, with no in-app purchases.

### Do USMLE Step2 or Quantum Cats Dance have ads?

Neither USMLE Step2 nor Quantum Cats Dance shows ads.

### Which is updated more often, USMLE Step2 or Quantum Cats Dance?

USMLE Step2 ships an update every 87 months, and Quantum Cats Dance daily. Most recently, USMLE Step2 was updated on October 15, 2026 and Quantum Cats Dance on October 16, 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.*