Quick Key is a FREE Mobile Student Quizzing App AND Teacher Grading App, for Paper Based, 1-to-1, and Blended Learning Assessments, Formative Assessments & Classrooms. Quick Key is compatible with most Android devices. If your device will not scan, send us an email at [email protected] and request support for your device. Created by a 15-year veteran teacher and launched by 250 teachers on Kickstarter. Quick Key works anywhere at any level of connectivity. With Quick Key 1-to-1 you can sen