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Not even a year after launching, the Mac App Store has logged its 100 millionth download, Apple reported yesterday. The app directory, which went live in January of this year, gives developers a place to sell applications for desktops and laptops running Mac OS X Snow Leopard and higher.

The Mac App Store takes the model Apple established with mobile and tablet apps for iOS and applies it to the desktop. Developers who opt to charge for apps get a 70% cut of the revenue, just as mobile developers do.

Nielsen has released its first mobile app rankings for Android since the organization started measuring smartphone usage directly using on-device meters.

The results are not hugely shocking, but contain some interesting tidbits nonetheless. The list is broken down into three rankings: overall usage, male usage and female usage. The top half of each list is littered with the apps you'd guess were popular: Facebook, Gmail, Maps, YouTube. Pandora, Words With Friends, Twitter and Amazon's Kindle app all make expected appearances in the top 20 as well.

In our continuing tradition of rounding up new mobile application releases we found interesting and/or exciting over the past month, we present you with this new list of apps for July 2011. This month, we found a lot of great new iPhone apps, some Android and tablet apps, and a bunch of "notable" application updates.

As always, share your thoughts on those we missed in the comments below.

Adobe is shutting down two of its app stores dedicated to mobile and desktop application distribution, Adobe InMarket and the Adobe AIR Marketplace. The decision, the company says, was based on developer feedback. Adobe says it will now focus its efforts on helping developers publish their apps on multiple platforms, including official app stores like Apple's iTunes, Google's Android Market, BlackBerry App World, Intel's AppUp, Samsung Apps and Toshiba App Place.

Document hosting and sharing site Scribd is venturing into the mobile space in order to give its publishers an opportunity to attract more readers. With a new mobile reader application called Float, Scribd aggregates content from news sites, magazines, blogs, and Scribd.com as well as from your social networks like Facebook and Twitter. You can also save items you find online to read later in Float, with the use of a specialized browser bookmarklet.

But what's most unique about this app is the way it reformats the text for the small screen. The "floating text" reading experience, which gives the app its name, reflows text originally formatted for the Web for better reading on mobile devices.

On Friday, Google officially announced the Android 3.2 platform, which offers a handful of enhancements, including one that will let you run smartphone apps on larger devices. A new compatibility display mode will provide an alternative to the UI stretching available today, and instead lets you "zoom" in on an app on a simulated low-res screen.

Essentially, it's like the iPad's 2x mode, but for Android.

Horace Dediu of asymco posted this chart (below) to his Apple trend-tracking blog this week, showing that, finally, app downloads have overtaken downloads of songs on iTunes.

We just came across a new service which app developers are going to love: App.net, a site that lets you make customizable landing pages for your mobile application. Using simple templates, your landing page can feature a description, a mockup of a mobile phone with a rotating carousel of the app's screens, links to download the app on various app stores, social sharing buttons and links to your company's online presence on sites like Facebook and Twitter.

Multiple outlets are reporting shifts in pricing in Apple's International App Stores, in order to adjust prices to reflect changes in the U.S. dollar. In some markets, prices went up, while in others, prices went down. For example, a $0.99 application in the U.S. is now £0.69, when previously, it was £0.59. Meanwhile, a Japanese app that was 115 Yen is now 85 Yen.

The average price for iOS applications is now at $1.44, up 14% year-over-year. And consumers are buying more apps this year than they did last - 61% more, in fact. This data comes from a new report from Piper Jaffray analyst Gene Munster (reported via Fortune), who found that today's iOS device owners will download 83 applications this year, up from 51 in 2010.