Anki flashcards
Also on WindowsFlashcards that use spaced repetition to help you remember.
Installs from Flathub.
Good news: Anki runs on Linux. It's the same app you use on Windows, and TuxPick installs it for you from Flathub.
Install Anki flashcards with TuxPickIt works on Ubuntu 22.04 and 24.04, and on systems built on them like Zorin OS and Pop!_OS.