Perka -

"Perka is a digital loyalty marketing platform that was launched in April 2011. An alternative to traditional paper and plastic card-based incentive programs, Perka provides interactive loyalty marketing solutions for businesses. The technology that Perka is built upon works on mobile phones via app or SMS and allows merchants to reward customers for frequent purchases. Perka also serves as a direct-marketing platform and analytics tool. Perka fits into the category of mobile loyalty, a modern type of loyalty program. In summer 2018, Perka was rebranded to Clover, its sister company. - Wikipedia"