Foursquare: Until now, Foursquare has been the way you let the world know all the cool places you go. Thursday's update to the free iPhone application takes the service down a new path, letting you know about all the other places you might like in addition to your usual haunts. Open up the app at noontime, for example, and you'll get a list of nearby places to eat, including recommendations based on your previous check-ins and the preferences of other Foursquare users. (So if you're a burger fan, Foursquare will now guide you to the most-loved grills in your area.) The check-in feature has also been overhauled, letting you select your location from a map instead of a list.
Lumin: You've heard of "augmented reality?" Well the $2 Lumin app for iPhone offers something different--"magnfied reality." That is, it actually turns your iOS device into a magnifying glass, letting you lock onto a detail with the camera and showing that detail at ten times its actual size, a feature that can be used for everything from getting a close look at fine print on contracts to checking your makeup without a mirror. The newest update to the app lets users share closeup images to Facebook or Instagram, or save them automatically to Dropbox. Finally: An app that brings 21st century technology to the task of examining your zits.
My First Classical Music App: Famed classical-music purveyor Naxos already offered this app in iPad form; this week My First Classical Music App came to the iPhone. The $5 offering acts as an illustrated album for young listeners, featuring more than 40 famous compositions, along with explanations of different instruments and short biographies of composers. Yes, most of us introduce our children to classical music by showing them video of Elmer Fudd singing "Kill The Wabbit," and while there's no reason to stop doing that, Naxos's offering can help kids expand on that first great lesson.