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Mobile App / SDK

State-of-the-art SDKs built for your customers with your developers in mind


Seamlessly integrate into your user journey

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Developer-friendly tools and resources for quick setup

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Simple and well-documented APIs for smooth implementation

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Enable card issuance, management, and deactivation through your SDK

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Kush Srivastava


Kush Srivastava, the co-founder of CARD91, is a fintech veteran with 18+ years of experience in the industry. At CARD91, he leads the product and technology development, regulatory compliance, and product operations for the business and card product.