Ask HN: MathAcademy for Physics

[ForgotIdAgain]

Is there an equivalent of mathacademy but for physics? I am especially interested in the hierarchical spaced repetition system

[userlander]

Not sure, but just wanted to express how much I love math academy. It has helped me truly love math and feel confident in the subject.

[jordanadamson]

I have not seen anything like Math Academy for Physics, but I also want to say how great Math Academy is.