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From Ars Subtilior:
If you are learning chinese with the Practical Chinese Reader books series, this app is made just for you! PCR cards is an easy to use flash card app with the vocabulary of books 1 to 3 of the Practical Chinese Reader series. Just select the chapters you want to study and add them to the first flash card box. Before you start to learn you decide which information will be displayed. Choose from: * Simplified Chinese * Traditional Chinese * Pinyin * English A flash card will be displayed. Tapping on the card will reveal the hidden information and then you can either mark the card as correct by swiping to the left, which will put the card in the next higher box or mark it as incorrect by swiping to the right, so that it will stay in the current box. The data for the flash cards was taken from http://hskflashcards.com/ The image of the blackboard used as background is from http://www.flickr.com/photos/8078381@N03/3711741298/ and licensed under a CC-BY-2.0 license (http://creativecommons.org/licenses/by/2.0/deed.en).