It is an official American Express App for the iPhone and iPod touch that allows you to pay your bill, see account activity and more. You can also see your recent transactions, manage multiple card accounts, view membership rewards points and log in securely with the same User ID and Password you use on americanexpress.com.
Eligible Cards:
-American Express Green Card
-American Express Gold Card
-Platinum Card
-Centurion Card
-Zync from American ExpressSM
-Blue from American Express
-Clear from American Express
- Optima Credit Card
-One from American Express
-Plum Card from American Express OPEN
-Blue for Business Credit Card
-American Express Corporate Card
-TrueEarnings Card from Costco and American Express
-The Delta Reserve Credit Card from American Express
-Delta SkyMiles Credit Card
-JetBlue Card from American Express
-Hilton HHonors Card from American Express
-Starwood Preferred Guest Credit Card from American Express
Note: This app is not limited for the given cards, it's also eligible for other cards