2025-09-06 00:00:00 Stamper is a virtual portfolio of loyalty cards on your mobile, always ready to collect new stamps. The application connects loyal customers who like using loyalty cards. Break free from all those paper cards missing out on stamps when sending out for food. From now on, you will never lose your loyalty cards! With the Stamper app you can: • Add loyalty cards to your virtual portfolio, • Add stamps to your virtual loyalty cards after scanning the seller’s code,