Quickly skimming through the webpage for the app it worded like they came up with the idea of spaced repetition. Just want to clarify that this is not a new con

Quickly skimming through the webpage for the app it worded like they came up with the idea of spaced repetition. Just want to clarify that this is not a new concept: https://en.m.wikipedia.org/wiki/Spaced_repetition https://en.m.wikipedia.org/wiki/Spaced_repetition