When evaluating the visibility of a logo design, most designers consider how it will look in all kinds of situations — printed on advertisements, cast in metal, embossed on letterhead, foil-stamped on packaging, blown up to a mega-size for environmental signage, etc. Logos for apps, however, are different. The most important test is how the mark will look at less than a quarter-inch high when viewed on a smartphone or laptop screen. Here’s a quiz to see if you can name these app brands, shown here larger than they are normally seen.