The latest info on American Airlines mobile apps
There is an iOS app from American Airlines which will work on your iPhone, iPod, or iPad.
For American Airlines AAdvantage members, you'll be able to manage your account from the app, though using their website will no doubt provide more functionality
As the most popular mobile platform in the world, American Airlines has taken notice of Android and provided an app for most Android devices. As is often the case, the Android app offers the same functionality as the iOS app.
If you're just looking for their mobile site, you can head on over to http://www.aa.com on your mobile device.