Grill Card is a free Chrome add-on developed by romeldira95 that allows users to verify if a code has already been registered. This application is particularly useful for testing applications with payment methods, as it generates valid card numbers.

One of the main features of Grill Card is the ability to store previously tested codes. This helps users keep track of the codes they have already tested and avoid repetition. Additionally, the add-on provides a filtering option to mark codes that have been found to be valid (lives) in financial institutions. This filter is particularly helpful in preventing the generation of duplicate numbers.

Grill Card is a convenient tool for developers and testers who need to verify the validity of card codes. With its user-friendly interface and helpful features, it simplifies the process of testing payment methods in applications.