Anki

About Anki

Anki is free, open-source SRS software that can be used on a computer or as an app on a mobile device. You can use it to study a foreign language by accessing more than 80 million user-created flashcards, creating your own, or doing a combination of the two. Anki employs a sophisticated algorithm to keep tabs on your understanding of each word you learn, letting you know which ones are most important to drill until you've mastered them and which ones can wait for now.