Here are some of the best ones available on iOS and Android (some are available on a browser, too). Try Khan Academy if you’re a long-term learnerKhan Academy, a nonprofit organization and partner of the College Board, has become synonymous with test prep. Out of all the apps, the Practice & Prep offering is unique because it's dedicated purely to the SAT, but it is customizable. Beyond that, you get practice questions, videos on the reading and writing sections, and practice tests. Use Varsity Tutors’ SAT: Practice, Prep, Flashcards if you want the most varietyVarsity Tutors is another well-known name in the studying space, and the company's SAT app is thorough.