Anki is a scheduling engine with a card editor attached. It makes no assumptions about what you are learning, which is exactly why it works for medical students, pilots and language learners alike. The cost of that generality is that an empty Anki install does nothing until you fill it.
For many people that is fine — shared decks exist, and a good one is a gift. For others it is the point where the project quietly dies: the deck you downloaded is ordered wrong, or full of words you do not need, or missing the ones you do, and editing three thousand cards is not how anyone wants to spend a Saturday.
Language Flash takes the opposite trade. It only knows how to teach languages, and in exchange it can produce cards on demand — name a theme, get vocabulary in your target language with glosses in yours, keep what you want. The scheduler underneath behaves the same way Anki’s does.