Magoosh (from a play on the Old Persian word magush, which refers to a wise person) is an online test prep company based in Berkeley, California that teaches students through video explanations and lessons. Magoosh provides test preparation materials for the GRE, GMAT, TOEFL, SAT, and ACT and aims to make test prep more enjoyable, affordable, and effective. The company also has mobile apps for both iPhone and Android.