This updated tool is currently available for those with the The Platinum Card® from American Express and The Business Platinum Card® from American Express. How to find your Platinum benefits in the appOpen the American Express app for iOS or Android. Bottom lineThe updated American Express app makes it much easier to enroll in and keep track of your Platinum card benefits. If you hold the Platinum or Business Platinum, it's worth opening the app to see which benefits you might not be maximizing. To learn more, read our full reviews of the American Express Platinum and American Express Business Platinum cards.