It's the perfect study supplement, and covers only the content that you need to know for the B exam without the unnecessary C exam content. Brainscape has embarked on setting the highest standard for AP prep in the mobile community by partnering with educational consultants: The Science Guys. The idea is to mesh the complete College Board outline of material with clear explanations in a streamlined adaptive flashcard software, so you can study as efficiently as possible. The adaptive platform lets you immediately diagnose weak areas (which will repeat more frequently as you study) and avoid over-studying already strong areas (which will be sorted out for you). It also tracks your overall success throughout. This won't completely replace your books -- indeed, we still recommend doing practice problems separately -- but it's the mobile prep tool you've been waiting for. **Important Updates: -All graphical and physical content cards have full picture examples. -Mnemonics used by the best test takers added to help boost retention. -Full test overview deck, so you don't have to go researching the College Board. -Only content necessary to ace the AP Physics B exam, and not the extended C knowledge base.