What’s a good method to track team progress?

Uni is randomly putting together a team of four to code an iOS app for our final project. The scope of the app is open but shouldn’t be overly complex. We have been told to come up with our own method for keeping track of objectives set and which team member delivered those objectives. We are also old to us Git to update the project.

My main question is, what is the best method to track/document team members assignments/tasks? Should we use an Agile approach with sprint assignments?

Anything would help thanks!