JABB Mobile is a productivity app designed for mystery shoppers to evaluate businesses and earn rewards. Users, known as JABBers, can receive mission assignments at various locations, visit them as a regular customer, and complete evaluations through a streamlined three-card review system. The app allows for submissions of photos, voice notes, and ratings, making feedback easy and efficient.

Key features include a mission map to locate assignments, a quick review process, and gamification elements that encourage users to level up and earn badges. The rewards store offers various vouchers and perks in exchange for accumulated coins and XP. JABB Mobile is specifically tailored for verified mystery shoppers, requiring an invitation or approval to access missions.