Home/Landing page - featured image with an action buttons, links to mobile and desktop versions, text describing what the purpose is, how it works
Deck listing page - this will list all of the users decks and/or publicly shared decks which will have images. It should include upvotes or stars, a progress bar and general information about the deck.
Deck more information - when a user clicks on a deck (from the previous page, desk listing page) this page will give more information about the deck such as subdecks (which will be in card form with an image), number of cards, other people using the deck, leaderboard, number of shares/likes, a header image with deck information.
The actual card view - This is the view the user will see when they are studying a deck. The front/back of a card. The user will be able to design the card (how data is seen on each card type). It should not be restrictive (IE: small with a border around it only permitting a few words to be seen would not work). This page should have input for writing, submit and then when the user answers, it should have buttons for wrong/right/partial.