I'd love some flashcard with native language. For example, I'm from Finland and I've been using Anki to leard Japanese, but there's no Japanese to Finnish sets available. So, the only way to learn using Anki is to translate Japanese -> English -> Finnish. And there's often new English words for me which will need a translation. I guess this kind of double learning is effective, but sometimes a little frustrating. I have decided to write some Finnish explanations to each kanji, which takes time.

Still, I think Anki is great for remembering new words. You'll just have to use it daily.