Your unit progress actually moves now — the home screen, Practice Bank and Stats all read the same live numbers, so every screen agrees. Also new: pick up where you left off, a card pointing you at the topic needing the most work, and question counts beside every percentage. Empty practice sets are gone. Thanks to the biggest shark fan we know for spotting this one. Sharks hunt using electroreception — jelly-filled pores on the snout that pick up the faint electric field of a heartbeat, letting them find prey buried in sand.