Is this a fair rate?

Every converter tells you what 1,000 dollars is worth. None of them tell you that the window in front of you is paying 4.7% under the going rate — which on that 1,000 is 47 dollars you are handing over for nothing.

The fair-exchange screen showing a 4.7% loss on a 1,000 USD exchange, flagged as Pricey

The converter screen showing 100 USD as 89.21 EUR

Two screens

Fair exchange?

Type what you're exchanging and what they're offering — either the rate on their board or the total they'll hand you. You get what you'd receive at the reference rate, what you'd actually receive from them, the loss in both currencies, and a verdict: Fair, Acceptable, Pricey, or Bad deal. No percentages to interpret.

Convert

A plain, fast converter across 64 currencies, for the other 90% of the time.

Works with no signal

This is the part other converters get wrong. A rate snapshot is built into the app, so it works the moment you install it — in an airport queue, at a border, on a plane, on a SIM you haven't activated yet. Refreshing is an improvement, never a requirement, and the screen always tells you how old the rates are so you can judge them yourself.

Nothing is collected

No account, no analytics, no advertising identifiers, no crash reporting. The only network request the app ever makes is for the public rate table, and it carries nothing about you. See the privacy policy — it is short, because there is very little to say.

A note on the rates. Reference rates come from exchangerate-api.com and update about once a day. They are indicative — the mid-market reference that banks and exchange houses price against. They are not a quote, and no exchange house is obliged to match them. That gap is exactly the thing worth seeing.