Practice CCS cases
like the real exam.
The most realistic CCS simulator, built to match the actual Primum interface. 50 cases and counting, 3,500+ orders, dynamic patients, and actionable personalized feedback you can use on Step 3.
Run the first 3 cases with just your email, no card required. Unlock the full catalog from $20.
Built to match the real Primum software you'll see on exam day.
Same order entry, same clock, same flow — no surprises when it counts.
Know exactly what to fix before you sit for the real thing.
Every case ends in a category-by-category score and an attending-style debrief on what you missed, what you got right, and what to do differently next time.
Three steps. Zero setup.
Pick a Case
Choose from 50 cases across 16 medical specialties.
Manage the Patient
Order labs, imaging, meds, and consults against a real-time clock.
Get Your Score
See exactly what you got right, what you missed, and why it matters.
Built for exam-day readiness
3,500+ Searchable Orders
The same medications, labs, imaging, procedures, and nursing orders available on the real exam.
Built by Residents
Cases and grading are built on extensive research by residents who want a more realistic, genuine learning tool for Step 3.
Money-Back Guarantee
If you don't pass Step 3, send us your score report and we'll refund your access payment in full.
Simple paid access
Run the first 3 cases with just your email, no card required. Payments are one-time charges through Stripe.
Cases across every major specialty
From bread-and-butter EM to high-yield subspecialties.
Ready to practice?
Sign in with your email, choose an access plan, and start working through the full catalog.
Sign In to Get Access