Of the 57 percent who said they would buy or use a mobile app to study for the LSTA, 79 percent indicated that they were choosing the mobile route because of convenience. That is, a test prep instructor might not be available at 2 am on Saturday; TestMax is. Students can download LSATMax for free from the Apple App Store. And in addition to the LSAT prep course, TestMax offers course for the Bar Exam and the SAT.