Sure, you can create stop motion in other ways, some even use Google Slides or PowerPoint! But, here is a way to create stop motion videos using any modern device, including iPads and Chromebooks.
Cloud Stop Motion offers the ability to create a free account in which you can have unlimited students and projects. The only limit on the free account vs a paid account is storage space. You’re limited to 2GB of media in the free account. With an account you can manage the students in your class and their projects.