I am participating in the Student App Challenge, so I wrote a cards-ui based flashcards app. I'd like to give away pro keys (it removes ads) for my app. Enjoy!
Link to app: https://play.google.com/store/apps/d...id.stack&hl=en
Pro key link (just install alongside the above): https://www.dropbox.com/s/41dk6q73g7...roUnlocker.apk
Note: I am the developer of this app!