The abstract for the given text is as follows:
The Jamba app provides a convenient way to order ahead for pick up and delivery. By joining the My Jamba Rewards program, users can earn points on every dollar spent and access exclusive offers. The app allows customers to save time by ordering for pick up or delivery. It offers a wide range of menu choices to brighten their day and allows customization of smoothies with a free boost. Users can also save their favorite orders for quick access. For any inquiries about orders, customers can contact the company through the provided link. However, it should be noted that the continued use of the app's GPS function in the background may result in decreased battery life.