I’ve just updated the trial download version of Sound Studio to make it a code-signed app, so that it will work with Gatekeeper in Mountain Lion (Mac OS X 10.8). There’s no other changes to the app in the version 4.2.3 trial from the previous version, and functionally, it’s identical to version 4.2 in the Mac App Store. —Lucius

Apple just sent out an email to everyone highlighting some apps in the Mac App Store, and Sound Studio is in it! The email’s subject is “The Mac App Store. Get apps for your Mac with a click.” in case you’re looking for it. Sound Studio is all the way at the bottom, under Apps for music.

It’s also on the Mac App Store page under the OS X Lion section on their web site. —Lucius

Since our Run 5k and Run 10k apps were early users of a certain method of logging in to Twitter called xAuth, and since Twitter recently made some changes on their servers, for the past two weeks people couldn’t log in to Twitter on our Run apps. People could still post to Twitter if they had already logged in, but if they logged out and tried to log back in, or never was logged in before and now tried to log in, they were out of luck until now.

I emailed the Twitter API team yesterday about the issue, and it was fixed just now, so you can log back in to Twitter now.

(For developers out there, the error was “Client application is not permitted to use xAuth” and this discussion thread has the answer you’re looking for.) —Lucius

rathole:

v2.0, including retina icons for the new iPad.

Last year at SXSW, I gave out business cards with QR codes for redeeming promo codes for my iOS apps. I gave out about 50 cards, but only about 5 were actually redeemed, and one of those was because I asked them to try to redeem it there. I’m not sure what it says about the people I meet at SXSW or if business cards just get tossed in a pile, but I’m not a fan of QR codes anymore. —Lucius

Check out two new Sound Studio tutorials on the Felt Tip website:
How to Digitize LPs and How to Make Ringtones. —Agnes

Count us in as part of those 210,000 iOS app economy jobs. —Lucius

For an art-design company as unique as eBoy, an iOS app was long overdue.

Now it has one: Priced at $4.99, The Grix lets users create the same kind of pixel-based art that made the company so popular, leading to deals with companies like Rolling Stone magazine, Google and Adidas. A simple drag-and-drop interface makes creating pieces a breeze; users can choose from several different colors and patterns with which to create their art.

We pushed an update just to make clearer the window that asks you to buy the app in the trial version of Sound Studio. The window was causing a lot of confusion to people who were buying the app from the trial version. —Agnes