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CardStack
AI agent that maximizes your credit cards
Most people with premium credit cards leave $500-1000/year on the table in unused credits, offers, and wrong-card swipes. CardStack connects to your actual spending via Plaid and uses AI to show you exactly what you're missing — in dollars, not percentages. Track every credit. Auto-enroll Amex and Chase offers. Know which card to use at checkout. See your real ROI per card. Built for Amex, Chase, and premium card power users who are tired of managing their wallet in a spreadsheet.
Hey PH 👋 Adam here, founder of CardStack.
Quick background: I've spent my career as a product leader building digital products at scale including HBO Max, discovery+, beIN SPORTS Connect, and Real Madrid's digital platform.
I've shipped products used by tens of millions of people. CardStack is the first time I've built something entirely for myself.
I have 12+ credit cards and was consistently leaving $1000+ a year on the table. Not because I wasn't paying attention, I just couldn't keep track of 12 Amex Platinum credits across 8 merchants, quarterly Chase offer resets, and which card actually earns the most at my specific spending patterns.
So I did what any PM does at 11pm when something bugs them enough: I built it.
CardStack connects to your actual spending via Plaid and uses AI to show you exactly what you're missing — in dollars, not percentages. Which credits you've forgotten. Which card you should have used on Tuesday at that restaurant. Whether your $895 annual fee is actually justified.
What's different from other apps:
— Recommendations based on YOUR real transactions, not generic category rules
— AI agent that tells you exactly which credits you're losing and why
— Missed rewards per transaction — "you lost $4.71 here by using the wrong card"
— ROI dashboard showing true net value per card after annual fees
Still early, launched a couple of weeks ago. First time building my own product after years of building for others. Would love honest feedback from the PH community, especially if you're an Amex or Chase power user.
Free trial available.
Happy to answer anything 👇
About CardStack on Product Hunt
“AI agent that maximizes your credit cards”
CardStack was submitted on Product Hunt and earned 3 upvotes and 1 comments, placing #62 on the daily leaderboard. Most people with premium credit cards leave $500-1000/year on the table in unused credits, offers, and wrong-card swipes. CardStack connects to your actual spending via Plaid and uses AI to show you exactly what you're missing — in dollars, not percentages. Track every credit. Auto-enroll Amex and Chase offers. Know which card to use at checkout. See your real ROI per card. Built for Amex, Chase, and premium card power users who are tired of managing their wallet in a spreadsheet.
On the analytics side, CardStack competes within Fintech, Artificial Intelligence and Credit card — topics that collectively have 514.8k followers on Product Hunt. The dashboard above tracks how CardStack performed against the three products that launched closest to it on the same day.
Who hunted CardStack?
CardStack was hunted by Adam Bader. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of CardStack including community comment highlights and product details, visit the product overview.
Adam Bader