The "Download Now" link directs you to the iTunes App Store, where you must continue the download process. You must have iTunes installed in order to open the link, and you must have an active iTunes account to download the application. This download may not be available in some countries.
From Massively Overrated:
Tired of forgetting when to check in and ending up in 'the middle seat?Group A reminds you exactly when to check in for your flight and helps you check in quickly. You no longer need to remember when the 24-hour mark is to check in for your Southwest Airlines flight. Search no more for your confirmation number to check in. Group A keeps track of your flights and your flight information, and reminds you at the right time to check in. Just enter your flight information and "Group A" will alert you to check-in for your flight prior to the 24-hour check-in window. Also, "Group A" makes it quick and easy to check in for your flight on Southwest.com.Get the very best seat available on your Southwest Airlines flight, every time you fly! Automated check in alert 24-hours in advance of flight Superfast flight check in with just a few clicks Add, view, and edit unlimited SWA flights Configure amount of time prior to the 24-hour check in window to be alerted View flight history Tell a friend what group number you receivedGive Group A a try and let us know what boarding number you get!Please 'like us on Facebook (our Group A App link is) http://www.facebook.com/#!/pages/Group-A-App/279075705443614