Anki Universal is a completely free flashcard app (no forced ads, paid models, etc.) that will help you memorize whatever you want with minimal efforts. You can add text, image, audio, and video to your cards and sync between your Windows 10 devices through OneDrive.

Starting from July 2017, you can sync your progress across all versions on iOS, Android, Mac, and Linux by using the free sync service of AnkiWeb. Please note that Anki apps on other platforms are developed by different groups.

* Currently, media files syncing with with AnkiWeb is not supported yet. However, you can insert them manually.