BUILD LOG // PAYDOWN
BLACK BOX
Building PayDown in public: a BNPL payoff app built with Claude, from first prompt to TestFlight.
TRANSMITTING · 16 ENTRIES · PAGE 2 OF 2
Testing the AI import on my own hardware
PayDown uses AI for exactly one job: reading pasted statement text and pulling out the plan details.
PayDown uses AI for exactly one job: reading pasted statement text and pulling out the plan details. Every number is computed by a deterministic engine — the AI never does math.
READ →What makes a debt app worth opening?
Before any code, I made myself answer a harder question: is BNPL tracking alone enough, or is that just a spreadsheet with an icon?
Before any code, I made myself answer a harder question: is BNPL tracking alone enough, or is that just a spreadsheet with an icon?
READ →Naming it PayDown
Halfway through planning I realized the thing didn't have a name.
Halfway through planning I realized the thing didn't have a name.
READ →Why I’m building PayDown
Klarna in one app, Affirm in another, a card minimum in a third, and no single place that answers the only question that matters: when am I done?
Klarna in one app, Affirm in another, a card minimum in a third, and no single place that answers the only question that matters: when am I done?
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