An Objective-C implementation of the Luhn algorithm for validating credit card numbers on iOS.
ObjectiveLuhn is an Objective-C library that implements the Luhn algorithm to validate credit card numbers in iOS applications. It provides a simple, reliable way to check card details before processing payments, reducing errors in transaction workflows.
iOS developers building apps that handle credit card payments or require card number validation, such as e-commerce or financial applications.
Developers choose ObjectiveLuhn for its minimal setup, single-method validation, and built-in card type detection, making it a lightweight alternative to more complex payment SDKs.
Luhn Credit Card Validation Algorithm
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Validates credit card numbers with a single method call like [Luhn validateString:], requiring no special formatting, as demonstrated in the README examples.
Identifies credit card types such as Visa or Amex using methods like creditCardType, adding useful context for payment forms without extra dependencies.
Extends NSString with a category method isValidCreditCardNumber, enabling validation directly on strings without additional imports, simplifying code integration.
Comes with unit tests and valid credit card numbers from sources like PayPal, ensuring reliability and easy testing for payment workflows.
Written in Objective-C, which requires bridging for Swift projects and may not integrate smoothly with modern Swift codebases, limiting its appeal.
Only validates card numbers using the Luhn algorithm, lacking features for expiration dates, CVV checks, or real-time bank verification, as admitted by its minimalist focus.
Requires CocoaPods for installation, which might add complexity compared to Swift Package Manager, especially for Swift-focused projects.