CardMaster - AI Manage your credit cards - Turn 3+ credit cards into a simple rewards plan.

I’m Charlie. I built CardMaster after realizing I was missing out on hundreds of dollars in rewards simply because I used the wrong card at checkout. CardMaster makes the right choice obvious—which card maximizes rewards for this purchase, right now. Today we’re collecting early access signups. If this would save you money, join the waitlist and tell me what must be included.