If you are studying a deck, and come across a card you don't want to learn right now, you can ignore it, by following these steps:

  1. During Review, open the menu (accessible by clicking "hamburger" icon in the top-right corner).
  2. Click the "Ignore" menu option. The icon will turn red, indicating the card is now ignored.


If you later decide you want to un-ignore the card, follow these steps:
  1. From the Decks screen, open the menu.
  2. Click the "Cards" menu option.
  3. Find the ignored card and tap/click on it.
  4. Click the Un-Ignore button.