Comparison

USMLE LANGE Q&A for Ob Gyn vs First Aid Cases USMLE Step 2CK

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

USMLE LANGE Q&A for Ob Gyn

Prepare for Ob Gyn exams with a comprehensive question bank. Access detailed explanations, track your progress, and focus on weak areas. Upgrade for lifetime access to over 1100 questions and multiple practice tests.

Highlights
  • Extensive question bank
  • Detailed explanations
  • Randomized and targeted practice
  • Progress tracking
  • Flagging for review
  • Lifetime premium access
Features
Read full description

With LANGE Q&A Obstetrics & Gynecology, you have the power to turn study anywhere, anytime. Tired of lugging around heavy textbooks and review guides? Let this premium study tool lighten your load. With questions and detailed answers covering topics included in the USMLE Step 2 and Ob Gyn clerkship exams, this resource is a great place to start your test prep. Test your overall knowledge by answering randomly generated questions from each category or target areas of weakness by focusing on a specific category. Install the free version today and jumpstart your studying! We have provided a limited free version of the content that you can try before deciding to upgrade. This version includes a limited amount of practice questions and basic progress metrics. Get your best value by upgrading to the Premium Version with a one time, in-app purchase. The Premium Version includes lifetime access to: • 1128 practice questions with detailed explanations • Unlimited access to ALL categories: • Obstetrics • Fetal Maternal Medicine • Pathology • Endocrinology • 1 comprehensive practice test containing 150 additional questions • Detailed results tracking measuring your strongest and weakest areas This dynamic study guide allows you to flag questions as you go, for easier review of problem areas. By offering a rigorous review of key concepts and facts, LANGE Ob Gyn Q&A gives you the knowledge you need to master the USMLE Step 2 and Ob Gyn boards to begin a rewarding professional career. Our Customer Success Team is available from 8am to 6pm, Monday - Friday (except on major holidays). Call us at 319-246-5299 and email us at medical@hltcorp.com with any questions. About the Authors: Vern L. Katz, MD Clinical Professor Department of Obstetrics and Gynecology Oregon Health Science University Medical Director, Perinatal Services Sacred Heart Medical Center Eugene, Oregon Sharon Phelan, MD Professor of Obstetrics & Gynecology School of Medicine Department of Obstetrics and Gynecology University of New Mexico Albuquerque, New Mexico Vicki Mendiratta, MD Associate Professor Department of Obstetrics and Gynecology University of Washington School of Medicine Seattle, Washington Roger P. Smith, MD The Robert A. Munsick Professor of Clinical Obstetrics & Gynecology Director, Medical Student Education Director, Division of General Obstetrics & Gynecology Department of Obstetrics and Gynecology Indiana University School of Medicine Indianapolis, Indiana

About

First Aid Cases USMLE Step 2CK

This app offers a comprehensive collection of clinical cases designed to help students prepare for the USMLE Step 2 CK exam. It features high-yield cases with active-recall questions and answers, emphasizing board-relevant diseases and concepts. Users can sample cases for free or unlock the full library through an in-app purchase.

Highlights
  • 344 high-yield clinical cases
  • Active-recall questions and answers
  • Board-relevant diseases and concepts
  • Two-column format for self-quizzing
  • 100+ images, diagrams, and tables
  • Note-taking and highlighting
  • Bookmark cases
Features
Read full description

Master USMLE® Step 2 CK through 344 high-yield clinical cases. First Aid Cases for the USMLE® Step 2 CK transforms high-yield concepts into realistic patient scenarios that strengthen clinical reasoning and prepare you for exam day. Based on the trusted First Aid™ series, this interactive app includes 344 exam-style clinical cases covering every major Step 2 CK topic. Active-recall questions, detailed explanations, and more than 100 images, diagrams, and tables help reinforce key concepts and improve long-term retention. FEATURES • 344 high-yield clinical cases • Active-recall questions with detailed explanations • More than 100 images, diagrams, and tables • Written by students who excelled on Step 2 CK • Organized to complement First Aid for the USMLE Step 2 CK • Perfect for clerkship review and Step 2 CK preparation COMPLETE STEP 2 CK COVERAGE • Cardiology • Dermatology • Endocrinology • Epidemiology & Preventive Medicine • Ethics & Legal Issues • Gastrointestinal • Hematology & Oncology • Infectious Disease • Musculoskeletal & Connective Tissue • Neurology • Obstetrics & Gynecology • Pediatrics • Psychiatry • Pulmonary • Renal/Genitourinary • Emergency Medicine POWERFUL STUDY TOOLS • Highlight important concepts • Bookmark difficult cases • Add personal notes • Track your progress • Mark completed cases • Email notes • Optimized for iPhone and iPad Expanded Apps Terms of Service: https://expandedapps.com/terms-of-use/ Expanded Apps Privacy Policy: https://expandedapps.com/privacy-policy/

Screenshots

USMLE LANGE Q&A for Ob Gyn4 screens
First Aid Cases USMLE Step 2CK4 screens

Verdict

The call

The clearest difference is review sentiment: First Aid Cases USMLE Step 2CK at 80% against USMLE LANGE Q&A for Ob Gyn's 50%. USMLE LANGE Q&A for Ob Gyn's advantage is iOS requirement (9.0 vs 15.6). On price, update cadence, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. USMLE LANGE Q&A for Ob Gyn sells 3 one-off in-app purchases and First Aid Cases USMLE Step 2CK sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

USMLE LANGE Q&A for Ob Gyn ships an update every 20 months, First Aid Cases USMLE Step 2CK every 19 months. The most recent releases landed on June 5, 2026 and September 8, 2026 respectively.

Scorecard2 real differences · 8 level
USMLE LANGE Q&A for Ob Gyn versus First Aid Cases USMLE Step 2CK: the parameters behind the verdict, then further details
ParameterUSMLE LANGE Q&A for Ob GynFirst Aid Cases USMLE Step 2CK
PriceFreeFree
Rating5.0 (2 ratings) — better
Positive reviews50.0% of reviews80.0% of reviews — better
Number of ratings2 — better
Update frequencyEvery 20 monthsEvery 19 months — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS9.0 — better15.6
Further details — not scored
Size58 MB62 MB
Age rating17+12+
DevelopergWhiz, LLCExpanded Apps

Customer experience

USMLE LANGE Q&A for Ob Gyn

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews6 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

First Aid Cases USMLE Step 2CK

Written reviews5 reviews
Positive80.0%
Neutral0.0%
Negative20.0%

In-app purchases

3 purchases

USMLE LANGE Q&A for Ob Gyn

One-time3
  • Obstetrics & Gynecology LANGE Q&A - Standard to Premium$14.99
  • Obstetrics & Gynecology LANGE Q&A - Standard$24.99
  • Obstetrics & Gynecology LANGE Q&A$39.99
1 purchases

First Aid Cases USMLE Step 2CK

One-time1
  • First Aid Cases for the USMLE Step 2, Second Edition (First Aid USMLE)$49.99

Questions

Is USMLE LANGE Q&A for Ob Gyn free?
USMLE LANGE Q&A for Ob Gyn is free to download, with in-app purchases available.
Is First Aid Cases USMLE Step 2CK free?
First Aid Cases USMLE Step 2CK is free to download, with in-app purchases available.
Do USMLE LANGE Q&A for Ob Gyn or First Aid Cases USMLE Step 2CK have ads?
Neither USMLE LANGE Q&A for Ob Gyn nor First Aid Cases USMLE Step 2CK shows ads.
Which is updated more often, USMLE LANGE Q&A for Ob Gyn or First Aid Cases USMLE Step 2CK?
USMLE LANGE Q&A for Ob Gyn ships an update every 20 months, and First Aid Cases USMLE Step 2CK every 19 months. Most recently, USMLE LANGE Q&A for Ob Gyn was updated on June 5, 2026 and First Aid Cases USMLE Step 2CK on September 8, 2026.

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