To use the app, you just need to upload a .txt file with the name of one student per line. Once you're prepared a roster file in .txt format, you can upload the same file every time you use it in a given course. The data you input and download is all stored on your device or in your browser only.

(2) There's a "Random Groups" tool for when you need to quickly assign students to random groups. This allows you to input the group size (eg. 1, 2, 3, 4), and it randomly places students into groups of that size. If there is a remainder, the remaining students are placed in an "overflow" group.

(1) There's a "Random Student" function for when you need to call on students to respond during a discussion (and want to make sure you don't call on the same person twice). It optionally allows you to quickly record brief feedback on the student's response.