Case study · Asseco Poland

Testing the product, not the mockups

An AI-led design process for a mobile investing app for a bank's brokerage.

  • Fintech
  • AI prototyping
  • Usability testing

01 Problem

Bank apps lose new investors to fintech, which wins them with speed and FOMO, then loses them.

02 North Star

An app that leads investors from beginner to strategist, so the bank earns from a relationship that lasts.

03 Action

A working app of ~75 screens, built with an AI coding agent. 18 investors used it; I fixed it between sessions.

04 Effect

97,1% task success. Handed over within budget; the target bank asked how to take it to their board.

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