This app lists all the applications on your phone and will copy selected app's APK files to the SD card. If the phone is rooted AND the app is in a read-protected directory it will attempt to gain superuser privileges, and use busybox to copy the file.
Get the installer of APK Dumper 1.0 for free and read users' reviews on Droid Informer. The app works flawlessly on Android 2.1 and higher. The download of this application doesn't contain viruses or any kind of malware. APK Dumper was originally created by Joe Pritzel and it is listed among the Tools category.
Over 10K users set up the app and the latest update was released on Oct 11, 2011. According to the latest info, this application is rated 3.7 on Google Play.