Currencies
Your default currency
CoreHue asks for it once, in a Set your default currency dialog the first time you do something that needs a price: creating an invoice, or adding an item. Your country suggests one, and you can pick any of the currencies CoreHue supports.
It is used for pricing, documents, reports and dashboard totals.
It cannot be changed. The dialog says so as you set it. Once your account has a default currency, nothing changes it. There's no setting for it, and support can't do it either.
This is the single most consequential thing to get right at the start. If you're in one country but invoice in another's currency, choose accordingly before you go any further.
More than one currency
Core works in one currency. Pro allows several.
If you shoot abroad, or have clients who expect to be billed in their own money, that's the difference. If everyone pays you in the same currency, it's worth nothing to you. See Core or Pro.
Working in several
On Pro, a currency selector appears at the top right of the invoice editor and on your booking services. Choose the currency before you add anything. Once a line has content the selector locks, because the prices are in that currency. Attaching a booking to an invoice sets the invoice to the booking's currency instead.
Contact records and reports keep currencies apart rather than adding them together. Adding dollars to euros produces a number that means nothing. Where a figure could cover more than one currency, you choose which one you're looking at.
What CoreHue doesn't do
It doesn't convert. There's no exchange rate applied anywhere. An invoice in euros is a euro invoice. The total is what you typed.
Saved items hold a plain number with no currency attached. Use one on an invoice in a different currency and that number is used exactly as it stands, so check the figure rather than assuming it converted.
It doesn't decide what to charge. Pricing across currencies is your call.
Taking payment
Card payments have to be in a currency your Stripe account supports. If they aren't, the online option isn't offered on that invoice and you'll need a manual payment method instead.
That's a common surprise on international work, so check before quoting.
Manual methods have no currency restriction. They're instructions, so whatever your bank accepts is what's possible.
On Core, after working in several
If you were on Pro with several currencies in use and move down to Core, new documents have to use your default currency. Work already started keeps its original currency, and CoreHue says so on the document: "This existing invoice can stay in EUR." See Changing or cancelling your plan.