Validate any credit or debit card number instantly with ValiCard, your go-to offline tool for quick and secure card verification. Designed for developers, merchants, and anyone who needs to check the validity of a card number on the fly.

Our app uses the Luhn algorithm (mod 10) to perform a checksum validation, helping you detect typos or incorrectly formatted card numbers in seconds.

Key Features:
* ✅ Instant Luhn Algorithm Check: Quickly verify if a credit or debit card number is mathematically valid according to the Luhn formula.
* 💳 Issuer Identification: Automatically detect the card's issuer. We support all major brands, including:
* Visa
* Mastercard
* American Express (Amex)
* Discover
* Diners Club
* JCB
* And more...
* 🔒 100% Secure and Private: Your privacy is our priority. The app does not store, save, or transmit any card numbers you enter. All validation happens directly on your device.
* ✈️ Fully Offline: No internet connection needed. Use it anywhere, anytime, with complete confidence.
* ✨ Simple & Clean Interface: A minimalist design makes validating cards effortless. Just type the number and get an instant result.

How it works:
1. Enter the credit or debit card number in the input field.
2. Tap the "Validate" button.
3. The app will instantly tell you if the number is valid and show you the card issuer.

Important Disclaimer:
This application does not verify if a card has money, is active, or is legitimate. It only checks if the sequence of numbers conforms to the Luhn algorithm, which is a standard for preventing simple data entry errors. It cannot be used to process payments or confirm the existence of a financial account.

Download ValiCard today for a fast, simple, and secure way to validate card numbers right from your pocket!