Credit Card Validator is a free Android application developed by Max Melnychuk. It is a simple tool that allows users to check their credit card number and determine the type of card. The program uses the Luhn algorithm, also known as the "modulus 10" algorithm, to validate various identification numbers like credit card numbers, IMEI numbers, National Provider Identifier numbers, and Canadian Social Insurance Numbers.

One of the key features of Credit Card Validator is that it does not collect, store, or send any entered card numbers. The application supports several popular card types such as Visa, MasterCard, Amex, BankCard, Dankort, DinersClub, Discover, JCB, and Switch/Solo. With this app, users can quickly and easily verify their card number and ensure that it is valid.

Overall, Credit Card Validator is a useful tool for anyone who needs to validate credit card numbers. It is simple to use and provides accurate results without compromising the user's privacy.