What Is MedDiagnosis? A Clinical Reasoning App for Medical Students

Medical education has always been good at teaching facts. It has been less good at teaching what to do with them under pressure, with limited resources, and with a real patient in front of you. MedDiagnosis is a mobile app built to close that gap.

What the App Does

MedDiagnosis puts you in the role of the clinician. You are given a patient presentation and must work through the case — building a differential, ordering investigations within a diagnostic budget, stabilizing a deteriorating patient, and ultimately reaching a diagnosis and treatment plan. Every decision has consequences. There are no unlimited retries and no clicking through options until something works.

The app currently contains 85 clinical cases across six specialty packs: Fundamentals, Cardiology, Emergency Medicine, Neurology, Toxicology, and Infectious Disease. New packs — including Pediatrics and OB/GYN — are in active development.

Who It Is For

MedDiagnosis is designed for:

• Medical students preparing for USMLE Step 2 CK or Step 3
• Students preparing for PLAB 2 or UKMLA
• NEET PG and NEXT candidates
• Junior doctors and residents sharpening clinical decision-making
• NP and PA students transitioning into diagnostic roles

How It Differs from Other Study Tools

Most medical study apps — Anki, Amboss, UWorld — are built around question banks and flashcard recall. They test whether you know the answer. MedDiagnosis tests whether you can reason toward it.

The key differences:

• The Sniper Mechanic — You have a limited diagnostic budget. A shotgun workup will exhaust your resources before you have a diagnosis.
• Lethal Traps — Common clinical errors are built into the cases. Giving glucose before thiamine, trusting a normal CT in a seizing patient — the app penalizes real mistakes.
• The Stabilize Mechanic — Patients deteriorate while you are waiting for results. You must manage the acute presentation in parallel with the diagnostic workup.
• Treatment Mode — Cases do not end at diagnosis. You prescribe, manage complications, and decide between medical and surgical management.

Pricing and Availability

The app is free to download with several cases available at no cost, including the first Fundamentals cases, the first Emergency Medicine case, and the first Neurology case. Daily game modes — ER Triage Blitz and Daily Rounds — are also free. Full specialty packs are available as one-time purchases with no subscription and no ads.

MedDiagnosis is available on iOS via the App Store and on Android via Google Play. The app works completely offline once cases are downloaded.

Evidence Base

Every case in MedDiagnosis is grounded in peer-reviewed clinical guidelines. The in-app reference library cites Harrison's Principles of Internal Medicine, UpToDate, KDIGO guidelines, and ACR/EULAR recommendations.