The AI-Powered Q-Bank for USMLE Step 3.

Prepare for both Day 1 (FIP) and Day 2 (ACM) with 15,000+ adaptive questions and advanced cognitive science tools designed for residents.

Efficient Retention for Busy Residents.

You don't have time to re-learn. Our platform uses cognitive science to ensure what you study, stays.

1. Active Recall (The Testing Effect)

Retrieving information is proven to build stronger memories than passive reading. Our entire platform is a powerful active recall engine.

(source: Karpicke, J. D., & Roediger, H. L. (2008). The Critical Importance of Retrieval for Learning.)

2. Spaced Repetition (Long-Term Retention)

Our algorithm schedules questions at the perfect, increasing intervals to interrupt the 'Forgetting Curve,' locking knowledge into your long-term memory.

(source: Ebbinghaus, H. (1885). Memory: A Contribution to Experimental Psychology.)
Mapped to the Step 3 Content Blueprint.

Our content is mapped directly to the USMLE Step 3 blueprint, covering both Foundational Science and Clinical Practice competencies.

Practice everything from 'Patient Safety' and 'Biostatistics' for Day 1 to the full range of clinical encounters for Day 2 (ACM). Our 15,000+ questions are your complete resource.

Your Personal AI Tutor.

Go beyond simple 'percent correct.' Our AI Performance Dashboard gives you actionable insights, just like a 1-to-1 tutor.

Mastery Learning

Visually track your proficiency by topic. Our dashboard helps you apply 'Mastery Learning' to focus *only* on what you haven't mastered.

(source: Bloom, B. S. (1968). Learning for Mastery.)

The 2 Sigma Problem

Your AI dashboard provides the 1-to-1 guidance proven to be **two standard deviations** more effective than conventional study.

(source: Bloom, B. S. (1984). The 2 Sigma Problem.)

$400/ year

billed once annually. includes a 30-day money-back guarantee.

  • 15,000+ questions for USMLE & Boards
  • AI-powered adaptive sequencing
  • Spaced repetition algorithm
  • AI performance dashboard (knowledge gap analysis)
  • Unlimited access

See how iatroX compares to UWorld, Rosh Review, MKSAP.

Prepare for Any Exam
Explore Our US Q-Banks

USMLE Step 2 CKUSMLE Step 3ABFM Board ExamABIM Board ExamABEM Board Exam

See the AI in Action (UK - Free)

Want to see our AI engine and cognitive science principles in action? Our UK Q-Bank, built on NICE guidelines, is free for all users. It is the perfect way to test-drive the iatroX platform.
Try the Free UK Q-Bank