I looked hard for an app that would help me record a piece of information that I want to revisit again and again with decreasing frequency until I've internalised it.

I tried Anki, but it was too cumbersome.

The way I do it at present is to write a note/attach a screenshot to a reminder on Google Keep which repeats daily, or maybe every 2 or 3 days.

I usually keep something on for 4-8 weeks until the thought or idea has been completely internalised.