| USMLE Step 1 Features | Kaplan's Qbank | Kaplan's Qbank Plus | USMLEWorld |
| Number of questions | 2,300+ | 4,500+ | 2,000+ |
| Answer questions on iPhone — results integrated with online account | √ | √ | Not Offered |
| 2,300+ questions rewritten in 2010 to precisely simulate the exam | √ | √ | — |
| Target questions by difficulty and yield | √ | √ | Not Offered |
| 2,000 explanations include medEssentials summary tables | √ | √ | Not Offered |
| 200 Qutorials — mini-lectures on the most challenging questions | √ | √ | Not Offered |
| Timed-tutor mode—answer under exam conditions & see explanations immediately | √ | √ | Not Offered |
| See test-by-test improvement | √ | √ | Not Offered |
| Exam-like interface including new sequential questions | √ | √ | √ |
| Multimedia questions | 35+ | √ | √ |
