From the Bitstack app
Tap the Savings tab.
Tap Bitcoin.
The price is displayed in the currency configured in your settings. By default, it appears in euros (€).
Display the price in euros or dollars
Tap your Profile (photo or initials, at the top right of the screen).
Tap Currency.
Select EUR (€) or USD ($).
From the Bitstack website
Go to the Bitcoin Price page.
Select your preferred time period and currency: EUR (€) or USD ($).