Facebook is the top branded app on iPhone's App Store this week, according to a chart produced for Brand Republic by UK firm Ustwo.
It's pulled the data from its PositionApp application, which tracks App Store downloads around the world.
Gibson Learn & Master Guitar is the second most popular branded app this week, according to the chart. It's followed by Alice in Wonderland, Google Earth, and Creme Egg.
The inclusion of Facebook and Google Earth could be seen as puzzling - yes, the two companies are brands, but many people might not see their applications as 'branded apps' in the same category as the Gibson and Creme Egg apps.
Even so, it's an intriguing insight into what's currently hot on the App Store with a branded tie-in.