Head-to-head review
NBMEcalc vs PredictMyStepScore
PredictMyStepScore has been around longer. We launched in 2026 with a more modern stack. Here is the unvarnished comparison.
Feature-by-feature
| Feature | NBMEcalc | PredictMyStepScore |
|---|---|---|
| Free unlimited predictions | ||
| Multi-source aggregation (NBME + UWSA + Free 120 + AMBOSS + CMS) | ||
| 95% confidence interval | ||
| Pass probability for Step 1 P/F | ||
| Per-subject weakness map | ||
| Personalized 14-day study plan | ||
| Downloadable PDF report | ||
| Mobile-optimized (responsive) | ||
| Transparent methodology document | ||
| Single-Report price | ||
| Multi-Step tracking |
NBMEcalc
- Free unlimited predictions
- Multi-source aggregation (NBME + UWSA + Free 120 + AMBOSS + CMS)
- 95% confidence interval
- Pass probability for Step 1 P/F
- Per-subject weakness map
- Personalized 14-day study plan
- Downloadable PDF report
- Mobile-optimized (responsive)
- Transparent methodology document
- Single-Report price
- Multi-Step tracking
PredictMyStepScore
- Free unlimited predictions
- Multi-source aggregation (NBME + UWSA + Free 120 + AMBOSS + CMS)
- 95% confidence interval
- Pass probability for Step 1 P/F
- Per-subject weakness map
- Personalized 14-day study plan
- Downloadable PDF report
- Mobile-optimized (responsive)
- Transparent methodology document
- Single-Report price
- Multi-Step tracking
Where PredictMyStepScore wins
- Six years of brand recognition on Reddit r/Step2
- Larger historical dataset (claimed)
- Familiar to attending physicians who recommend it to clerks
Where NBMEcalc wins
- Multi-source aggregation (5 input types vs 2)
- 95% confidence interval — no other tool offers this
- Free unlimited predictions without signup
- Paid report tells you whether to sit or postpone — and the 3 highest-leverage moves for your specific input pattern
- Modern mobile UX — install as a PWA
- Public methodology document and corrections process
Bottom line
If you want a single-source NBME → Step 2 CK lookup, both work. If you want multi-source aggregation, a confidence interval, and a paid report that makes a sit-or-postpone call plus tells you what to actually do next, choose NBMEcalc.