A while back I saw a subreddit Reddit posting Android app ideas, once such idea there was for flash cards but to be able to answer with your voice. Here’s the original thread – https://www.reddit.com/r/AppIdeas/comments/ejaa7a/a_simple_flash_card_app_that_recognizes_speech/fr1fktu/?context=3
Well I decided to try and take up that as a challenge for myself and I think I got pretty close to a basic version.
Take a look at the link below and see what you think!
https://play.google.com/store/apps/details?id=com.luckycog.voice_cards_free
Images of the app: