Think of Knack as the AirBnB of peer tutoring. Any student who earns an A is eligible to tutor in that topic for an hourly rate of their choice (typically up to $30). Since launching three years ago in Florida, the app has expanded to 75 universities. This semester, the platform arrived in Las Vegas.

UNLV junior Nayeli Chavez has been a biology tutor for two years and a Knack user for about a month. She likes its flexibility. “Most tutoring services are closed after 5 pm.,” Chavez says. “With Knack you have the freedom to choose the person and place to study at anytime you want.”