◇ Final Design

◇ Deep Dive

🟢 Try the live build: fxpress.netlify.app — the architecture described below is running in production.

Outcome

What's live, what's still simulated, and what's next?

Outcome at a Glance

FXpress was carried through the full design process — research, definition, ideation, design, prototyping, usability testing, iteration — and then extended one step further: the validated decision core was built into a working, deployed web widget that runs against real exchange-rate data and narrates the timing recommendation with Claude. The case study describes the architecture; the live build proves it.

The Outcome phase covers three things:

1. The final designed product — what was built, the trust-anchoring decisions visible across the screens, and the live web build that extends the design into a working artifact.
2. What testing showed — the validations and the issues, with severity and the iteration response.
3. What I'd do differently — the honest reflection on research gaps, the lowest-performing flow, and the live build's known limits.

🟢 The Live Build

fxpress.netlify.app

Live exchange rates for 18 corridors, Claude-narrated guidance via a Cloudflare Worker, deterministic conversion math in JavaScript, editable triggers with calendar reminders, and provider hand-off to the user's preferred money-mover (Wise, PayPal Xoom, Chase, Remitly, and others). The widget never moves money itself — it computes the signal, narrates the recommendation, and hands off to a licensed provider for the actual transfer.

The architectural decision that makes it defensible: code computes, Claude narrates, the user authorizes. Full detail on Final Design and Prototype Build Notes.