Duolingo ▪ January 7, 2014

Today, Apple has announced that App Store sales topped $10 billion in 2013. In December alone, customers spent over $1 billion in the store, a record-breaking figure — the most successful month in App Store history. In total, developers for iOS and OS X have now earned $15 billion on the App Store.

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Duolingo ▪ October 3, 2013

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