Plug In Launcher is a free Android app that does just one thing, and it does it well — it launches any app of your choice when it detects power or a connected pair of headphones. In fact, it can pair one app to your phone’s 3.5mm headphone jack and another to your USB port, letting it launch, say, a music player when you plug in headphones, and perhaps an alarm clock while you’re charging it overnight, saving you a button press (note: the “Would you like to launch” message is optional) each time. All it asks in return is a pair of running processes that eat up 5.7MB of memory (as of this writing) and the ability to restart itself when you reset your phone. Sure, the app’s a little limited compared to context-aware suites like Locale or Nokia Situations , but free is free, and this one’s useful. Plug In Launcher for Android makes things happen when you connect USB or headphones originally appeared on Engadget on Sun, 06 Mar 2011 17:06:00 EDT. Please see our terms for use of feeds . Permalink