Premium Features
- 310+ USMLE-style clinical vignette questions
- All practice modes: Tutor, Timed Exam, Rapid-Fire Drill
- Full calculator suite: NNT/NNH, Odds Ratio, Relative Risk, Confidence Intervals, Power/Sample Size
- Unlimited AI Tutor — ask any biostatistics question 24/7
- Performance dashboard with detailed analytics
- Adaptive learning engine with spaced repetition
- Weak-topic tracking and personalized study plans
- Detailed answer explanations for every question
- Priority support
Plans
Premium Monthly: $19.99/month
Premium 3-Month (Best Value): $49.99 every 3 months — only $16.66/month, save 17%