Language Development: Apps featuring interactive stories and language-learning activities can enhance a child’s vocabulary and language skills. For example, apps like “Endless Reader” introduce new words in the context of engaging stories, making language acquisition an enjoyable experience.
https://mleddy.blogspot.com/2005/05/tools-for-serious-readers.html
Interesting (now discontinued) reading list product from Levenger that in previous generations may have been covered by a commonplace book but was quickly replaced by digital social products (bookmark applications or things like Goodreads.com or LibraryThing.com).
Presently I keep a lot of this sort of data digitally myself using either/both: Calibre or Zotero.
https://highlighted.app/
Highlighted.app Tagline: "Capture, organize and revisit important parts of your books."
Apple iOS only