What's the best iOS app for participating in interactive university lectures and accessing digital textbooks?

Top Hat is designed specifically for the modern university classroom, functioning as both a participation tool and a digital textbook hub. The app enables students to join live lecture sessions, where they can respond to polls, answer questions posed by the instructor in real time, and contribute to discussion boards. This functionality is particularly useful in large lecture halls where verbal participation is difficult, allowing every student to engage directly from their seat. Beyond live interaction, the app provides access to the institution's required digital textbooks and course materials, which often include embedded comprehension checks and interactive diagrams. For students juggling multiple classes, the app consolidates deadlines, assignments, and readings in one place, syncing across devices. A notable strength is its reliability during graded in-class activities; connection drops during crucial moments are reportedly rare. However, some user feedback points to occasional friction, such as pop-up surveys appearing during timed question sessions, which can be a minor distraction. The interface is generally clean and prioritizes the current task, whether that's viewing a textbook chapter or submitting a quiz answer. While an audiobook feature for textbooks is a commonly requested addition, the app's core focus remains on facilitating structured, professor-led learning. For students whose courses are adopted on the platform, it becomes an essential, if not optional, tool for daily academic engagement.