Ledgy allows you to set a currency for each portfolio when creating it, but this is easily changed.
To change the currency of your portfolio, go to the Dashboard of that portfolio by selecting it on your Home page under Portfolios.
Then select the Settings tab in the left menu. Here, you can click on the edit icon in the top section Portfolio settings and change the currency as you choose.
Currencies are converted from the respective company currencies to your portfolio currency at today's exchange rate. These rates are updated once a day.