Clinical Case Simulator
Stop Guessing.
Start Reasoning.
A 71-year-old man is found slumped on a bench, smelling of alcohol. His BAL is positive. Everyone assumes he is "sleeping it off." But his pupils are pinpoint. He hears everything — he just can't respond.
What is your next step?
Why MedDiagnosis
Most apps reward basic pattern recognition.
We teach the deeper reasoning process.
Learn clinical medicine by bridging the gap between theory and real-world practice. Master the "next best step" questions tested on the USMLE, build focused differentials, order labs and imaging, stabilize emergencies, and face the real-time consequences of every choice.
Core Mechanics
Step into the shoes of
the attending physician.
Build the DDx
Formulate focused differential diagnoses and avoid unnecessary testing. You have a limited budget — can you prove it with a precise workup, or will you waste thousands on a shotgun approach?
Clinical Reasoning Simulator
Make step-by-step decisions and choose the next best step as the virtual patient responds in real time. Every decision has consequences.
Emergency Stabilization
Manage critical emergency cases with airways, fluids, and oxygen under pressure.
Survive Lethal Traps
Glucose before thiamine? Trusting a normal CT on a seizing patient? Learn to anticipate and avoid common clinical errors before you make them on the ward.
Key Features
Everything you need
100+ USMLE-style clinical vignettes
High-yield cases across all major specialties
Interpret real-world data
Labs, X-rays, CT, MRI, ECG/EKG, Echo & POCUS
Evidence-based feedback
High-yield clinical pearls citing Harrison's, UpToDate, KDIGO, ACR/EULAR
Gamified progression
Unlock achievements, track streaks, climb the clinical ranks
Case Studies
8 Specialty Packs
Fundamentals & Residency
Build and strengthen your diagnostic reasoning across multiple specialties
Emergency Medicine
Acute presentations and unstable patients
Infectious Disease
Sepsis, meningitis, and complex infections
Cardiology
ECGs, ACS, heart failure, arrhythmias
Neurology
Stroke, seizures, altered mental status
Toxicology
Overdoses, toxidromes, antidotes
Pediatrics
Age-specific presentations and emergencies
Coming Next
Pulmonology & OB/GYN
Daily Practice
Build your streak
Daily Rounds
5 new mini-vignettes daily: translate symptoms into clinical terms and build your medical vocabulary.
ECG Challenge
Sharpen your ECG interpretation with daily clinical vignettes.
ER Blitz: Triage
A fast-paced medical game — review rapid-fire images to make split-second admit or discharge decisions.
Reviews
What users are saying
“I encountered the exact same case on rotations that I practiced in the app. My preceptor praised me for knowing how to rule out and what tests to order.”
“Have you seen House M.D. and want to feel like the head of diagnostics? This is the app for you.”
“Helpful study tool for differential diagnosis. Great visuals, perfect for quick study sessions.”
“Very interactive. My friend suggested it to me for my knowledge.”
MedDiagnosis doesn't just teach you the answer.
It teaches you how to think.
Whether you're a medical student, IMG, or resident building confidence — MedDiagnosis develops the clinical reasoning, differential diagnosis, visual diagnosis, and clinical skills that define strong clinicians. The perfect companion for USMLE prep, internal medicine rotations, ward readiness, and medical board exams.
Built for future physicians
Whether you're preparing for boards or sharpening skills on the wards
USMLE Step 2 CK & Step 3
CCS-style clinical decision-making and management
NEET PG / NEXT
Long-form clinical vignette mastery
PLAB 2 & UKMLA
Emergency and management station prep
Medical Students & IMGs
Build confidence in clinical reasoning before rotations
Residents
Sharpen your differential and decision-making on the wards
NP & PA Students
Master the shift to diagnostic reasoning
Simple, Stress-Free Access
One-time purchase. No subscriptions. No ads. Fully offline.
FAQ
Frequently Asked Questions
Yes! The first 3 Fundamentals cases, first Emergency Medicine case, and first Neurology case are completely free. You also get daily games like Triage Blitz and Daily Rounds. Unlock full specialty packs with one-time purchases — no ads, no subscriptions.
100+ cases and 25+ hours of clinical reasoning across Cardiology, Emergency Medicine, Internal Medicine, and more. We have Fundamentals, Residency, Cardiology, Emergency Medicine, Neurology, Toxicology, Infectious Disease, and Pediatrics packs live — with OB/GYN coming soon.
Absolutely. MedDiagnosis trains you for "next best step" questions — essential for Step 2 CK, PLAB 2, and the new NEXT pattern. It complements question banks by teaching you how to think through cases, not just memorize answers.
Question banks test recall. MedDiagnosis trains clinical decision-making. You get a limited budget (the Sniper Mechanic), face Lethal Traps that punish real clinical mistakes, and stabilize crashing patients while you wait for results.
Yes, all cases work offline once downloaded. No internet required.
Android via Google Play and iOS via the App Store. Free to download with optional specialty pack purchases.
Want to master the mechanisms behind every case?
PathoPlay builds the foundation. MedDiagnosis puts it into practice.
Explore PathoPlayReady to stop guessing?
Free to start. No credit card required.
Educational use only. Not for clinical decision-making. USMLE® is a trademark of NBME/FSMB. No affiliation or endorsement.