Extra Dollar started from a plain observation: almost everyone carries multiple cards, and almost nobody uses the right one. The rewards are real, the rules are a moving target, and optimizing by hand is a chore nobody signs up for.
Why we believed it
We didn't write a thesis deck. We looked for people already trying to solve this for themselves — spreadsheets, forum threads, half-built apps — and found plenty. That's the demand signal we build on: not what people say they'd use, but what they're already hacking together.
If people are already building a worse version of your product by hand, you've found something.
What's next
We're widening the early-user group and pressure-testing the recommendation engine against real spend. The bar to move from Build to Prove is simple: does it put more money in people's pockets than the effort it asks of them? We'll know soon.