Abby is a free Android application developed by 4handy under the Lifestyle category's Shopping subcategory. It is a loyalty program that enables customers to collect points and use discount codes in the Abby store chain. This application provides shoppers with a convenient way to earn points while shopping, which can be used to redeem products or receive discounts. With Abby, customers can check their point balance and transaction history, as well as receive notifications about exclusive deals and promotions. Overall, Abby is a useful application for shoppers looking to get the most out of their shopping experience at Abby stores.