Comparison

First Aid Cases USMLE Step 2 vs CathDoc

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

Head to head
About

First Aid Cases USMLE Step 2

Features
Read full description

""Try before you buy"" - Download the FREE App, which includes sample content. In-App purchase required to unlock all content. First Aid Cases For The USMLE Step 2 CK, Second editionΒ is a powerful casebook packed with 344 exam-type clinical cases that teach you how to work through questions on the exam. Completely updated based on student feedback, it includes active-recall questions and answers that reinforce key concepts. KEY FEATURES * 344 high-yield cases--94 NEW!--written by students who aced the exam Cases emphasize board-relevant diseases and concepts * Open-ended active recall questions and answers teach you to work through cases and reinformce must-know facts and concepts * Two-column format for easy self-quizzing * 100+ images, diagrams, and tables complement the cases organized the same ways as First Aid for the USMLE Step 2 CK and First Aid Q&A for the USMLE Step 2 CK to facilitate parallel study No internet connection is required to access the content after the initial download. Find information quickly using powerful SmartSearch technology. Search part of term for those hard to spell medical terms. Content licensed from printed ISBN 10:Β 0071625704 Content licensed from printed ISBN 13:Β 978-0071625708 If you have any questions or comments, email us any time: customersupport@skyscape.com or call 508-299-3000 Privacy Policy - https://www.skyscape.com/terms-of-service/privacypolicy.aspx Terms and Conditions - https://www.skyscape.com/terms-of-service/licenseagreement.aspx Author(s):Β Tao Le; Elizabeth Eby Halvorson Publisher:Β The McGraw-Hill Companies, Inc

About

CathDoc

Features
Read full description

CathDoc is the essential coding companion for interventional cardiologists. Designed by cardiologists, for cardiologists, this app streamlines procedure documentation and ensures accurate billing compliance with 2026 Medicare guidelines. KEY FEATURES: - 2026 Code Coverage Complete coverage of interventional cardiology codes including diagnostic catheterization, PCI, structural heart, TAVR, peripheral vascular, and mechanical circulatory support procedures. - Multi-Vessel PCI Support Easily document first, second, and third vessel interventions with proper coronary modifier assignment (LD, LC, RC, LM, RI) for Medicare billing compliance. - NEW 2026 Drug-Coated Balloon Codes Includes new codes with bundling guidance for IVUS/OCT imaging. - Redesigned Peripheral Vascular Codes Complete 2026 peripheral code overhaul with territory-based organization (Iliac, Femoral/Popliteal, Tibial/Peroneal, Inframalleolar) and lesion complexity differentiation. - RVU Calculator Real-time physician work RVU calculations with 2026 Medicare conversion factor ($36.04) for reimbursement estimates. - Coding Validation & Feedback Automatic detection of coding errors, missing vessel modifiers, and NCCI bundling conflicts. Modifier -59 guidance for same-day diagnostic cath with PCI. - What's New 2026 Reference Built-in educational guide explaining all major 2026 code changes for coronary, peripheral, and structural heart procedures, including official definitions. - HIPAA Compliant No patient names or PHI stored. Uses case IDs only for procedure documentation. - ICD-10 Indications Quick selection of common cardiac, peripheral, and structural heart procedure indications. - Moderate Sedation Tracking Built-in sedation time calculator with proper 99152/99153 code assignment. SUPPORTED PROCEDURE CATEGORIES: - Diagnostic Cardiac Catheterization - Percutaneous Coronary Intervention (PCI) - Drug-Coated Balloon (NEW 2026) - Intravascular Imaging (IVUS/OCT) - Coronary Physiology (FFR/iFR/CFR) - Structural Heart (ASD, VSD, PFO, LAA closure) - TAVR (all access approaches) - Peripheral Vascular Interventions - Mechanical Circulatory Support (Impella, IABP, ECMO) Developed by Lumen Innovations for the interventional cardiology community.

Screenshots

First Aid Cases USMLE Step 24 screens
CathDoc4 screens

Verdict

The call

The clearest difference is in-app purchases: CathDoc at none against First Aid Cases USMLE Step 2's 1. CathDoc also leads on ads (none vs shown). First Aid Cases USMLE Step 2's advantage is iOS requirement (13.0 vs 15.6). On price and device support there is nothing between them.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. First Aid Cases USMLE Step 2 sells 1 one-off in-app purchase. CathDoc asks for nothing beyond the download.

Scorecard3 real differences Β· 3 level
First Aid Cases USMLE Step 2 versus CathDoc: the parameters behind the verdict, then further details
ParameterFirst Aid Cases USMLE Step 2CathDoc
PriceFreeFree
Update frequencyβ€”Every 3 weeks
AdsYesNo β€” better
In-app purchasesYesNo β€” better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS13.0 β€” better15.6
Further details β€” not scored
Size149 MB12 MB
Age rating17+4+
DeveloperSkyscape Medpresso IncLumen Innovations, LLC

In-app purchases

1 purchases

First Aid Cases USMLE Step 2

One-time1
  • First Aid Cases USMLE Step 2CK$38.99
None

CathDoc

No in-app purchases

Questions

Is First Aid Cases USMLE Step 2 free?
First Aid Cases USMLE Step 2 is free to download, with in-app purchases available.
Is CathDoc free?
CathDoc is free to download, with no in-app purchases.
Do First Aid Cases USMLE Step 2 or CathDoc have ads?
First Aid Cases USMLE Step 2 shows ads; CathDoc does not.

Other comparisons