Co-founder and CEO Aaron Bai and co-founder and CTO Sahil Phadnis built co-branded business credit cards and expense-management software for SMBs in overlooked "backbone" industries like pharmacies, HVAC, and auto dealerships.

Community-led through professional-association co-branding, amplified by founder build-in-public posts rather than paid acquisition or content marketing.

~6,526 monthly visits as of July 2026, ~1,800 customers and ~$20M in monthly transaction volume as of May 2025, and ~$28M in disclosed equity funding as of May 2025.

Affiniti's acquisition unit is the association partnership itself (NCPA, APMA, MAG), not the website or the founder's X audience, both of which are small; the co-branded card collapses discovery and signup into one action inside a channel SMBs already trust.