# Case Files: Biochemistry — Excel on USMLE Step 1 & Shelf

> Excel on USMLE Step 1 & Shelf (iPhone/iPad app by Expanded Apps, Inc..)

- Source: https://appshunter.io/ios/app/case-files-biochemistry/id955265985 (this page in markdown: same URL + `.md`)
- Developer: [Expanded Apps, Inc.](https://appshunter.io/developer/313709778)
- Category: Medical, Education
- Price: Free with in-app purchases
- Age rating: 12+
- Requires: iOS 15.6 · 20 MB
- Languages: English
- Released: 2015-01-31
- Data updated: 2026-06-13
- User reviews in markdown: https://appshunter.io/ios/app/case-files-biochemistry/id955265985/reviews.md

## What is Case Files?

Master Biochemistry—Fast: Finally understand biochemistry through real clinical cases. Case Files: Biochemistry delivers high-yield content designed to simplify complex concepts and help you retain what matters.

Understand—Don’t Memorize
-Each case connects core biochemical concepts to real patient scenarios, helping you learn faster and with greater clarity.

High-Yield Review That Makes Sense
-Designed to make biochemistry easier:
 -50+ high-yield clinical cases
 -Clear explanations of complex concepts
 -Step-by-step clinical reasoning
 -Biochemistry pearls for quick review

Built for Exam Success
-Prepare effectively for USMLE Step 1 and course exams with focused, high-yield content.

Study Anywhere, Anytime
-Review cases quickly
-Track your progress
-Learn in short, focused sessions

Trusted Case Files® Series
-Proven case-based learning
-Real-world clinical scenarios
-High-yield, exam-focused content

Get Started
-Download the app to access sample cases. Unlock the full set for complete biochemistry review.


Expanded Apps Privacy Policy: https://expandedapps.com/privacy-policy/


Expanded Apps Terms of Use: https://expandedapps.com/terms-of-use/ 

Third edition

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Weekly Access | $10.99 | per 7 days |
| 1 Year | $79.99 | per year |
| 1 Month | $18.99 | per month |
| 1 Week | $9.99 | per 7 days |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Case Files Biochemistry Test Review Questions for USMLE Step 1 & NBDE Exams | $39.99 | one-time |
| Lifetime Access | $29.99 | one-time |



## Version history (last 5 releases)

### 2.2 — 2026-04-11

Updated OS and metadata

### 2.1 — 2024-10-03

Updated to latest OS

### 2.0 — 2024-04-20

Fix for in app purchase bug

### 1.9 — 2023-11-11

-Updated to latest OS

### 1.8 — 2020-10-05

Updated splash screens and icons
Updated to latest OS

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All apps by Expanded Apps, Inc.: https://appshunter.io/developer/313709778

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-13.*