Glassroom is an app for teachers, but could be used by students as well which includes Google Classroom and all of the other Google Apps for Education such as Google Docs and other educational tools and its free.
Price USD 0
License Free
Version 1.3
Operating System iPhone OS 4.x, iPhone Webapp, iPhone OS 3.x, iOS, Apple Watch, iPhone OS 2.x, iPhone OS 1.x
System Requirements None