Assay

Checking a rate used to mean three browser tabs, a source of uncertain accuracy, and mental arithmetic against yesterday. I wanted one quiet place that answered a simple question — where do things stand, and which way did they move? — using official numbers and nothing else.

What it is

A dashboard that opens with the day's gold price and its recent movement, followed by a personal watchlist of currencies with current rates and small trend lines. A history section works two ways: follow a trend across a date range as a chart and a table, or look up the exact official rate for one specific day. Everything exports to CSV for spreadsheets, invoices, and records. Accounts cover two-factor sign-in, themes, and English or Polish.

Already loaded before the day starts.

1 / 1

Already loaded before the day starts.

What it taught me

• One trusted source beats many convenient ones. All the data comes from the official provider, normalized into a single shape before it reaches the screen.
• Boring reliability is the feature. Syncs and caching run on a schedule, with guards against overlapping runs and retries when the far side is slow. Nobody ever sees this part; it's the reason the app never looks wrong.
• Precision has contexts. The same number serves very different needs: a trend to glance at, and a value that must be exact because someone is verifying an invoice with it.
• Rituals deserve small courtesies. A greeting that matches the time of day, charts already loaded when the app opens — when a tool is meant to take thirty seconds of a morning, its atmosphere is part of its utility.

1 / 1

Where it stands

Live — official data refreshed daily, waiting in the dashboard before the day starts.