It is a free validator app for credit cards. You can use it to check your card's validity, type, and country. It supports major credit card brands such as Visa, MasterCard, American Express, Diner's Club, JCB, and Voyager.

The first thing you need to know about this app is that it is free to use. The second thing is that it is a validator app, which means that it is used to check the validity of a card number.

This app can be used in two different ways. You can either choose to input the first 6 digits of the card number and use the validator to check if the number is valid or not.

The other way is to choose the country, type, and bank of your card and use the app to check if the number is valid or not.