Adaptive Preparation for USMLE Step 1 & Step 2 CK

Study smarter for the USMLE.

EndlessMed adapts to your weaknesses, explains the distinction, and retests until you master it.

Or take a free practice block. No sign-in needed.

2,000+ Quality-Reviewed QuestionsAdaptive Preparation CoachPhysician Reviewed

Founding BetaFree during Beta. Join today to receive 10% off when paid plans launch.There is no obligation to subscribe — you'll always be free to stop using EndlessMed before any paid plans begin.

Illustration of a medical student following an adaptive learning pathway from a wrong answer to a focused weak area, a comparison insight, and mastery.

Adaptive Preparation Coach

Assess
Baseline Assessment
Practice
Blueprint-Driven Learning
Adapt
Track Your Progress

Readiness estimate

Know how ready you are after just 50 questions

Blueprint-weighted estimate across the exam's categories
An honest range, not a single number
A countdown to your exam date

Create a free account

Readiness estimate

Sample

84 days · On track

Moderate confidence

Readiness range: 46–70%

Sample numbers shown for illustration — your estimate is built from your own answers.

This is an estimate that improves with more answered questions.

Preparation Coach

Your next step, made clear

Your study plan continuously adapts as you learn, helping you focus on the topics that will improve your exam readiness the most.

Estimated readiness

Start with a baseline

Next study priority

Build your starting profile

Today’s study goal

Complete a baseline or begin a focused study session.

Continue Studying

Why EndlessMed

Adaptive Preparation Coach

Personalized study recommendations based on your performance.

Physician-Reviewed Questions

Quality-reviewed clinical questions with detailed explanations.

Blueprint-Driven Learning

Coverage aligned with the USMLE blueprint.

Track Your Progress

Monitor improvement from baseline through exam day.

Questions Available: 3,000+
Personalized Coaching: Adaptive
Assessment: Baseline
Progress Tracking: Ongoing

New in beta

Meet your AI Study Partner

EndlessMed builds today's plan from your practice history. After you reveal an answer, choose Analyze my mistake to see the decisive clues and a concise correction. The daily plan is always included; AI is used only when you request an analysis.

A daily plan built from your practice
Analyze my mistake after you reveal an answer
AI used only when you ask

Included in the beta with a monthly coaching allowance.

You are studying for

Your learning history stays with you as you progress from Step 1 to Step 2 CK and Step 3.

In development

Learning From Every Student

As more students use EndlessMed, anonymized response patterns will identify common misconceptions—such as concepts students frequently confuse and explanations that do not produce lasting improvement. These insights will guide better physician-reviewed questions, clearer contrastive explanations, and more effective learning pathways, while each student's experience remains personalized to their own performance.

Configure your USMLE Step 2 CK mock exam

USMLE Step 2 CK · Beta

Choose how many questions you want and an optional subject focus.

Exam format

Number of questions20

Guest practice is limited to 20 questions per session. Create a free account for longer exams and full exam-day simulation.

Questions are generated in batches, so larger exams still build quickly.

Mode

Exam realism

Exam Mode — hide lab reference rangesLab values appear as bare numbers, like the real software. A Lab Values panel is always one click away inside the exam.Blueprint-weighted subject mixIgnores the subject picker and spreads questions across disciplines the way a full-length exam does, with a varied physician-task mix.Simulate Exam Day (sign in required)Multiple blocks of up to 20 questions at 30 minutes each, with one shared 55-minute break budget that keeps draining between blocks — just like test day.

Subject focus

Type any clinical topic and we'll generate questions focused on it.

Make this extra challengingLeans into borderline values and closer distractors — good for late-stage review, not for building foundational understanding.

📈 Constantly Improving

900+ improvements and counting.

EndlessMed is continuously refined — new questions, clearer explanations, and better coaching are added as the platform learns what helps students most.

Built by Physicians. Designed for Learning.

EndlessMed combines physician-reviewed questions, adaptive learning, and evidence-based educational design to help you prepare more efficiently for the USMLE.

One Platform. Every Step.

Prepare throughout your USMLE journey with one adaptive learning platform.

Step 1 — Beta
Step 2 CK — Beta
Step 3 — Beta

Your learning history stays with you, allowing EndlessMed to better understand your strengths and personalize your preparation over time.

Refer friends. Save up to 30%.

Earn 10% off your first paid purchase for each friend who joins through your referral and later becomes a paid member — up to 30% off. Each friend also gets 10% off their first purchase. Paid plans haven't launched yet, so referrals stay pending until then.

For educational practice only — not a substitute for official NBME materials.