Free ways to collaborate on a project for students without Appflow

We are planning to use Ionic for our final year project. Is there a way we can collaborate in one project for free remotely. I know we can use Appflow but we cannot afford the monthly cost for at least 7 months.

Is it possible to run an ionic project from a github repo ? and then different members of the group that has a github account can access that shared repo?

I’m new with Ionic