Food apps is taking smartphone users by storm. In a matter of just days after the release, more than one million customers have joined Chick-fil-A One, the restaurant company’s new app that allows guests to customize their order, pay in advance and skip the line at the register. The surge quickly boosted Chick-fil-A One to the number one spot in the iTunes App Store only a few hours after the app was announced on June 1.

To thank users for making the new Chick-fil-A One™ mobile app one of the top downloaded apps following its June launch and help ease customers into the ”back to school” season, Chick-fil-A® is offering app users a free breakfast reward this month. Guests will have until Sept. 30 to redeem the offer.

Chick-fil-A One, which replaces the restaurant chain’s previous app, features a membership program that will surprise customers with their favorite food for free, based on their preferences and previous orders.

The company has been an innovator in customer oriented mobile solutions. Chick-fil-A launched the first version of its app in 2012. The company began piloting mobile ordering in 2013. All Chick-fil-A One users also have access to nutrition and allergen information and a restaurant locator.