BLine Test Prep is a test preparation service that is now offering a free SAT and GMAT preparation program. Both programs offer full-length practice tests that students take online. After completing a practice test students receive instant feedback on the questions they answered. The feedback comes with animated and narrated explanations of the correct answers. For busy students who don’t have time to work through a whole test in one sitting, there is an option to pause and come back to the same place later. Overall, this could be a good service for students to use as they prepare to take the SAT this fall.