Apple has made “available on the Mac App Store†badges for developers to be used in marketing their apps.
We now offer localized versions of the "Available on the Mac App Store" badge in German, Danish, Spanish, Finnish, French, Italian, Japanese, Dutch, Norwegian, Portuguese, and Swedish. Take advantage of these localized badges to ensure your customers know your app is available on the Mac App Store.
The Mac Developer Program members can get English and localized versions of the badge Via the Marketing Resources section.