The only major difference between the two new products is the content included. Firecracker MD will include all of the content you need for Step 1 and Step 2, mapped specifically to the recently updated USMLE syllabus. Firecracker DO will have this same exact content, however it will also have additional OMM content that is needed for the COMLEX exams. This is an important distinction because both of these products are designed to create a study plan that is specific to you, covering everything you need to learn from your first day in the product, all the way up to your board exam. That study plan is built with the content you need to cover in mind, so we recommend choosing the one that best fits.