# Calcsharp Pro vs USMLE Mastery Step 1 Exam Prep

The clearest difference is price: USMLE Mastery Step 1 Exam Prep at Free against Calcsharp Pro's $1.99. Calcsharp Pro's advantage is in-app purchases (none vs 2) and update cadence (every 2 days vs every 3 weeks). On ads, device support and iOS requirement there is nothing between them.

USMLE Mastery Step 1 Exam Prep is free to download; Calcsharp Pro costs $1.99 up front. USMLE Mastery Step 1 Exam Prep sells 2 in-app purchases, starting at $49.99 per month. Calcsharp Pro asks for nothing beyond the download.

Calcsharp Pro ships an update every 2 days, USMLE Mastery Step 1 Exam Prep every 3 weeks. The most recent releases landed on September 22, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | Calcsharp Pro | USMLE Mastery Step 1 Exam Prep |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/usmle-mastery-step-1-exam-prep/id6742191606/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 days** | Every 3 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 4 MB | 68 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Nikola Stepan](https://appshunter.io/developer/398370680) | [MEDizzy LTD](https://appshunter.io/developer/1152971880) |

## What reviewers say

### Calcsharp Pro

[App page](https://appshunter.io/ios/app/calcsharp-pro/id1644401194)

**Features:** Vision Pro support

**In-app purchases:** none


### USMLE Mastery Step 1 Exam Prep

[App page](https://appshunter.io/ios/app/usmle-mastery-step-1-exam-prep/id6742191606)

Prepare for the USMLE Step 1 exam with a comprehensive question bank and analytics. Master complex medical concepts with detailed explanations and track your progress across devices. Optimize your study strategy for exam success.

**Highlights:** 3,000+ board-style questions, Deep-dive rationales, Personalized analytics, Cross-device sync, Daily goal setting, Dark Mode and Notepad

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium USMLE - 1 month | $49.99 | per month |
| Premium USMLE - 1 year | $479.99 | per year |


## Frequently asked questions

### Is Calcsharp Pro free?

Calcsharp Pro costs $1.99, with no in-app purchases.

### Is USMLE Mastery Step 1 Exam Prep free?

USMLE Mastery Step 1 Exam Prep is free to download, with in-app purchases available.

### Do Calcsharp Pro or USMLE Mastery Step 1 Exam Prep have ads?

Neither Calcsharp Pro nor USMLE Mastery Step 1 Exam Prep shows ads.

### Which is updated more often, Calcsharp Pro or USMLE Mastery Step 1 Exam Prep?

Calcsharp Pro ships an update every 2 days, and USMLE Mastery Step 1 Exam Prep every 3 weeks. Most recently, Calcsharp Pro was updated on September 22, 2026 and USMLE Mastery Step 1 Exam Prep on September 26, 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.*