US iPhone users have voted the App Store the best app download service currently available, ahead of Android Market, BlackBerry App World and Windows Marketplace.
In a study of 4,000 smartphone owenrs conducted by Nielsen, 84 per cent of those who owned iPhones said they were satisfied with the service the App Store provides.
In second place was Google's Android Market is a hugely popular app service, with satisfaction levels of 81 per cent.
Only 56 per cent of Windows Marketplace users claimed to be content with Microsoft's offering.
BlackBerry users were even less impressed than WinMo customers, with 42 per cent of them expressing a dislike for Research in Motion's (RIM) service.
Nokia owners hoping to get an idea as to how well people are reacting to the Ovi Store are out of luck, as this has yet to launch in the USA.
Respondents were asked to share the total number of apps they had downloaded. iPhone owners were, perhaps not surprisingly, in the lead, with a 37 app average.
Android users followed in second place with 22 apps apiece and WinMo users took last place with just 13 downloads.