Chalkable is a site that lists the best education apps in one place and lets you buy it through the Chalkable site. You can search apps by keyword, or browse by categories like Math, Science, History and more.
It is also a learning platform, providing a calendar, messaging, grade book, and attendance for teachers and students to use.
Teacher and Administrator versions are in Beta and free. The student version is in beta, is $10 per year, and includes $5 towards apps.
It could be a nice way to have classroom management system and apps all in one place.
EDU 2.0 - free course management system for schools