Carls Jr. Mex is an Android app developed by UpMenu, which allows you to order food online with ease. The app has a simple and user-friendly interface that enables you to explore the menu, see promotions, and check delivery costs. The app also provides information about the restaurant's working hours, and you can access your order history as well.

The app's main feature is the ability to order food online, which is perfect for those who want to avoid waiting in line or calling in their orders. The app is free to download and use, making it accessible to everyone. With the Carls Jr. Mex app, you can enjoy your favorite food from the comfort of your own home, without any hassle.