Of the top free apps in the App Store right now, four of the top 25 are coloring apps — including the No. 3 app in the App Store, called Color by Number. That, along with Colorbox, Pixel Art, and ...

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Color-by-numbers apps are really popular on the App Store right now, with four different apps rising to the top of the free apps chart. The apps have a combined 3.2 million downloads over the past ...