Amex Japan is a finance app by American Express with 500,000+ downloads (about 864K estimated). +2.4K installs in the last 7 days. Rated 5.0 from 11K ratings. Install growth, rank history, SDKs and ad networks.
From the store listing: “The official app for credit card members provided by American Express, "American Express Service App".
You can check the status of credit card payments and the number of points at any time from your device.
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Main function
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• Confirmation of credit card usage status
See all your…”